How to Throw a Two-Seam Fastball: Grip, Mechanics, and Drills for Every Level
Last updated: March 28, 2026
I have been throwing two-seam fastballs since I was twelve years old, and I have been teaching pitchers how to throw one for the last eighteen seasons. The two-seamer is the pitch I lean on when I need a ground ball, when I want to jam a hitter on the hands, or when I am sick of watching guys square up my four-seamer because they have my arm slot timed. If you are a pitcher who relies only on a straight fastball and a breaking ball, you are leaving outs on the table. The two-seam fastball is the cheapest, easiest, and most repeatable way to add lateral movement to your arsenal without learning a brand-new pitch from scratch.
This guide walks through everything I teach in my private lessons: the grip, the mechanics, the release cues, the drills, the common mistakes, and the way the pitch fits into a real game plan. By the end you will know exactly how to throw a two-seamer, how to make it move, and how to use it to get hitters out at any level from Little League to college ball. If you want to compare this pitch to its straighter cousin, my four-seam fastball guide is the natural companion to this one.
What a Two-Seam Fastball Actually Does
A two-seam fastball is a pitch that runs and sinks. It is thrown at fastball velocity, usually one to three miles per hour slower than the same pitcher’s four-seamer, and it moves arm-side because the seams interact with the air differently than they do on a straight fastball. For a right-handed pitcher, the ball moves to the right and down. For a left-hander, it moves to the left and down. The movement is not large in absolute terms, often only six to twelve inches of horizontal break and a few extra inches of drop compared to a true four-seamer, but it is enough to turn a barreled ball into a weak grounder.
The pitch is sometimes called a “two-seamer,” a “tailing fastball,” or grouped together with the sinker. The sinker is a close relative but tends to have more depth and less horizontal run; the two-seamer is usually a true fastball with extra movement, while the sinker is a heavier ground-ball pitch. Many MLB pitchers use the terms interchangeably depending on the analytics department, but for the purposes of this guide, I will treat the two-seamer as a fastball variant that tails and sinks. If you want a deeper dive into the heavier ground-ball version, see my sinker guide.
Why the Two-Seamer Belongs in Your Arsenal
Hitters do not just hit velocity. They hit patterns. If every fastball you throw arrives in the same lane with the same shape, even a good fastball gets squared up the third time through the order. Adding a two-seamer lets you attack different parts of the strike zone with the same arm action and the same release window. Against a right-handed hitter, I can run a two-seamer in on the hands at the same velocity I just threw a four-seamer up and away. Two pitches that look identical out of the hand, but break in opposite directions on the back end. That is the deception advantage.
The two-seamer also generates more ground balls than almost any other pitch in baseball. Major league pitchers who throw two-seamers or sinkers in 25 percent or more of their pitches typically post ground-ball rates above 50 percent. That matters because ground balls produce double plays, they almost never become home runs, and they keep your outfielders fresh. Pitchers who limit hard contact and elevated barrels live longer in this game. The two-seamer is one of the best tools for accomplishing both.
Equipment You Will Need
You do not need much to learn the two-seam fastball, but the right setup will speed up your progress. Here is the gear I bring to every two-seamer development session.
| Item | Why You Need It | Approximate Cost |
|---|---|---|
| Quality baseballs (12-pack) | Real leather seams react better than scuffed practice balls; consistent seams give consistent movement | $45 to $90 |
| Bullpen mound or portable mound | Flat-ground reps teach the grip; mound reps teach the pitch | $300 to $1,200 |
| Catcher with a target glove | You cannot evaluate movement without a stationary aim point | Free with a teammate |
| Radar gun or velocity tracker | You need to know your two-seamer is staying close to your four-seamer velocity | $130 to $400 |
| Slow-motion video (phone, 240 fps) | You cannot see release without footage; the phone in your pocket is enough | Free |
| Spin and movement tracker (optional) | Rapsodo, TrackMan, or a Pocket Radar Smart Coach app gives you spin axis and break numbers | $300 to $4,000 |
| Resistance bands | Arm care before and after throwing protects your elbow and shoulder | $25 to $60 |
If you are working on a budget, a bucket of new balls, a phone with slow-motion mode, and a willing catcher are enough to learn the pitch. I do recommend a velocity reader so you can confirm the two-seamer is not dropping more than three miles per hour off your four-seam, which is the danger zone for hitters to time it. The Pocket Radar Smart Coach is what I take to lessons because it doubles as a video and velocity tool.
Step One: Learn the Two-Seam Grip
The two-seam grip is named for the fact that two of the ball’s seams point forward in the same direction. Imagine looking at a baseball and finding the spot where the seams form a horseshoe or a U-shape. Now flip the ball so two of the long, parallel seams run vertically away from you. Those are the two seams you grip.
Place your index and middle fingers on top of the ball so that each finger rests directly along one of those parallel seams. Your fingers should be close together, almost touching, with the pads of the fingertips on the leather just inside the seam. Your thumb sits underneath the ball, centered between your two top fingers, ideally on a seam if you can find one comfortably. Your ring finger and pinky curl off to the side, not gripping the ball.
The grip pressure should be firm but not death-tight. A useful cue I give my pitchers is “hold it like a tube of toothpaste with the cap off.” Too tight and you will lose velocity and feel; too loose and the ball will squirt out and lose movement. The contact point that creates the run is your middle finger. That finger applies slightly more pressure than the index finger as you release the pitch. That uneven pressure is what spins the ball off-axis and gives you arm-side run.
Step Two: Set Up Your Mechanics
The single biggest mistake young pitchers make with a two-seamer is changing their mechanics to make the ball move. They tilt their wrist, shorten their stride, or yank across their body to force run. Stop. The two-seamer is a fastball. You throw it with your fastball delivery, your fastball arm slot, and your fastball intent. The grip does the work. Your job is to deliver the pitch the same way you deliver every other fastball so that the hitter cannot see it coming.
From the windup or the stretch, your setup should be identical to your four-seamer. Same balance point, same stride length, same hip rotation timing. If you want a refresher on those mechanics, I cover them step by step in my guides on pitching from the windup and pitching from the stretch. The two-seamer slides into that same delivery without modification.
Your arm slot matters. Pitchers with three-quarter and lower arm slots get more lateral run on a two-seamer because the spin axis tilts more toward horizontal as the arm angle drops. Over-the-top pitchers can still throw a good two-seamer, but they typically get more sink than run. That is not bad; it just changes how you use the pitch. A high-slot two-seamer is more of a “drop the bottom out” pitch, while a low-slot two-seamer is more of a “run it onto the hands” pitch. Know which kind of two-seamer your arm slot produces and plan accordingly.
Step Three: The Release
This is where the pitch is won or lost. The release of a two-seamer feels almost identical to a four-seamer, but with one critical difference. You finish through the ball with the middle finger leading the index finger. I tell my students to think about “pulling down on the middle seam” as the ball leaves the hand. That cue creates the offset spin axis that produces movement.
Your wrist should stay neutral. Do not pronate aggressively, do not supinate, do not flick. The wrist is firm and the forearm is extending toward the target. The fingers do the spinning, not the wrist. If you find yourself rolling your wrist over to make the ball run, stop immediately. That is how arm pain starts. Run comes from finger pressure and seam orientation, not from cranking your wrist.
The ideal spin rate for a two-seamer is in the 1,900 to 2,250 rpm range for most amateur and professional pitchers, which is slightly lower than a typical four-seamer at 2,200 to 2,500 rpm. Lower spin combined with an offset axis is what allows the ball to sink and run. If your spin rate is identical to your four-seamer, you are probably gripping it too tight or releasing it like a four-seamer.
Step Four: Find Your Target Location
A two-seam fastball is not a pitch you throw for the middle of the strike zone. Movement plus middle equals damage. The two-seamer lives in two specific lanes: arm-side off the plate and arm-side corner of the strike zone. For a righty against a righty, that means starting the ball at the inside corner and letting it run onto the hands, or starting it just off the inside corner and letting it run back to catch the corner for a called strike.
For the same righty against a lefty, the two-seamer runs away from the hitter. You start it at the heart of the plate and let it tail off the outside corner, or you start it at the outside corner and let it run off the plate for a chase pitch. Either way, you are using the movement to widen the strike zone in a direction the hitter does not expect.
The aiming point is not the catcher’s glove. The aiming point is the spot where you want the ball to start. The ball will finish six to twelve inches arm-side of that point. New two-seamer throwers consistently miss arm-side because they aim where they want the ball to end. Aim where you want it to begin, and let the seam orientation finish the job.
Common Mistakes and How to Fix Them
I see the same handful of mistakes from almost every pitcher who picks up a two-seamer for the first time. Here is the table I hand out at clinics. Reference it after every bullpen until none of these issues are showing up on your video.
| Mistake | What You See | How to Fix It |
|---|---|---|
| Gripping the ball too tightly | Velocity drops 4 to 6 mph; ball spins like a knuckle-curve | Loosen until you can feel seam texture; “toothpaste tube” pressure |
| Wrist rolling at release | Ball cuts glove-side instead of running arm-side | Keep wrist neutral; finish through with finger pressure only |
| Index and middle fingers spread apart | Ball wobbles, no clean movement | Fingers together, touching or nearly touching, on the seams |
| Aiming for the catcher’s mitt | Pitch ends up six inches off arm-side every time | Aim at the starting point; let movement carry it to the target |
| Slowing the arm down | Two-seamer is 6+ mph slower than four-seamer; hitters time it | Throw it with full fastball intent; same arm speed as four-seam |
| Trying to manufacture movement with the wrist | Forearm and elbow pain after bullpens | Stop. Movement comes from grip and finger pressure, not wrist |
| Throwing it only down in the zone | Hitters lay off; pitch becomes predictable | Mix locations; the two-seamer also works on the inside corner up |
| Picking the wrong seam orientation | Movement is inconsistent; sometimes runs, sometimes cuts | Find the same horseshoe seam every time; build a pre-pitch routine |
| Using it as a primary fastball without command | Walks pile up because the pitch is harder to locate | Build the two-seamer as your second fastball, not your primary |
| Ignoring spin axis on tracking tools | You think you have a two-seamer; data shows it’s a slower four-seam | Confirm spin axis is between 1:30 and 3:30 (righty) or 8:30 and 10:30 (lefty) |
Drills to Develop a Two-Seam Fastball
You do not learn a pitch by throwing it in games. You learn it by drilling it until the grip and release become automatic. These are the drills I run with every pitcher who is adding a two-seamer to the arsenal, in the order I introduce them.
Drill 1: Seam Hunt
Sit in a chair with a baseball and your eyes closed. Spin the ball in your hands until you find the two-seam grip purely by feel. Open your eyes to confirm. Repeat one hundred times. This drill seems silly until you realize that finding the right grip on a wet, sweat-soaked baseball in the seventh inning is harder than it looks. Two-seam pitchers who can grip the ball in the dark are two-seam pitchers who can grip it on the mound under pressure.
Drill 2: Towel Snap
Hold a small hand towel by the corner, grip it with your two-seam hand position, and snap it forward like you are throwing a pitch. Focus on finishing with the middle finger leading. The towel should snap with a clean popping sound. If the towel flutters or twists, your finish is sloppy. Twenty reps before every bullpen.
Drill 3: Flat-Ground Catch with Intent
Play long catch with a partner from forty to sixty feet using only the two-seam grip. The goal is not velocity; it is movement and arm action. Throw twenty to thirty pitches at 70 to 80 percent intent. Watch the ball flight on every throw. You should start seeing run after ten or fifteen reps if your grip is right. If you see no movement at all, your fingers are probably not on the seams correctly.
Drill 4: One-Knee Release
Kneel on your throwing-side knee with your glove-side leg planted in front. Throw to a partner forty feet away using only your arm action. This drill isolates the release because your lower half cannot help. If you can spin a clean two-seamer with run from your knees, your release is sound. Twenty to twenty-five reps, two or three sessions a week.
Drill 5: Mound Bullpen with Targets
Move to a mound with a catcher and a set of small targets, either a tee in the strike zone, a glove held in specific spots, or a fold-up framing trainer. Throw five-pitch sets to specific corners: arm-side low, arm-side middle, arm-side up. Then throw a five-pitch set to the glove-side corner to confirm you have not lost your four-seam command in the process. Twenty-five to thirty-five total pitches per bullpen.
Drill 6: Live At-Bat Reps
Once your bullpen movement and command are consistent, bring in a live hitter. Tell them what is coming. Yes, tell them. The point is not to fool them at first; it is to confirm the pitch behaves like a two-seamer when a real hitter is in the box. Watch their reaction. Are they jamming themselves on the inner half? Are they hitting weak ground balls? If yes, you have a two-seamer. If they are squaring it up, you have a slow, straight fastball.
Drill 7: Game-Speed Sequencing
The final drill is a simulated inning. Pitch to three hitters using your full arsenal, with at least one two-seamer per at-bat. The goal is to integrate the pitch into your sequences, not just throw it in a vacuum. I cover this layer of pitch design in my pitch tunneling guide, which pairs perfectly with the two-seamer because the pitch is most effective when it tunnels off your four-seamer.
Two-Seam vs Four-Seam vs Sinker: How They Differ
Pitchers and coaches use these terms loosely, and that creates confusion for guys who are trying to learn each pitch. Here is the breakdown I give to my pitchers.
| Pitch | Velocity (Relative) | Spin Rate | Movement Profile | Primary Use |
|---|---|---|---|---|
| Four-seam fastball | Fastest, baseline | 2,200 to 2,500 rpm | True vertical “ride,” minimal horizontal movement | Up in the zone, swing-and-miss, primary fastball |
| Two-seam fastball | 1 to 3 mph slower | 1,900 to 2,250 rpm | 6 to 12 inches arm-side run, modest sink | Arm-side corner, ground balls, jam right-handers |
| Sinker | 1 to 3 mph slower | 1,800 to 2,150 rpm | Heavy depth, modest run | Bottom of the zone, double-play balls, contact pitch |
| Cutter | 2 to 5 mph slower | 2,300 to 2,600 rpm | Small glove-side cut, late | Jam left-handers, break bats, weak contact |
The two-seamer sits between the four-seamer and the sinker. If your pitch sinks more than it runs, you are throwing a sinker. If it runs but barely sinks, you are throwing a true two-seamer. Both are valid and both can produce outs. The grip is similar; the difference is often where you place your thumb and how much downward finger pressure you apply at release.
Advanced Tips for Pitchers Who Already Throw a Two-Seamer
If you already have a two-seamer in your arsenal and you want to take it to the next level, these are the adjustments I work on with college and professional pitchers.
Tip 1: Build Two Different Two-Seamers
The same pitcher can develop a “running” two-seamer that lives on the inside corner and a “sinking” two-seamer that lives at the bottom of the zone. The difference is grip pressure and finish. The running version uses lighter middle-finger pressure and a slightly higher arm slot; the sinking version uses heavier downward pressure and a finish that drives toward the ground. Having two distinct two-seamers in your back pocket gives you two different attack lanes that look identical out of the hand.
Tip 2: Use the Seams Against the Wind
On a windy day, especially with an arm-side wind, your two-seamer’s movement will be exaggerated. On a cold-weather day, the ball is harder and the seams grip the air differently; you may get less movement than expected. Adjust your starting target accordingly. I always throw a few warm-up bullpen two-seamers in the dugout before the first inning to feel out how the ball is moving that day.
Tip 3: Pair the Two-Seamer with Your Slider or Sweeper
The two-seamer and the slider are an elite combo because they move in opposite directions out of the same arm slot. Against a right-handed hitter, the two-seamer runs in and the slider sweeps away. The hitter cannot commit early. If you do not have a slider yet, my sweeper guide walks through the grip and mechanics for that companion pitch.
Tip 4: Throw It in Hitters’ Counts
Most amateur pitchers throw their two-seamer only in pitcher’s counts as a “put-away” sinker. That is fine, but it makes the pitch predictable. Advanced pitchers throw the two-seamer in 2-0, 3-1, and 1-0 counts when hitters are looking for a four-seamer to mash. The two-seamer’s modest velocity drop is invisible to a hitter who is geared up for fastball, and the movement turns a hitter’s swing into a weak roll-over.
Tip 5: Use It as a First-Pitch Strike
Starting an at-bat with a two-seamer running onto the inside corner for a called strike puts the hitter in a defensive mindset for the rest of the at-bat. They have to respect the inner half on every pitch from there forward, which opens up the outer half for your four-seamer and your slider. The two-seamer is a great “set the tone” pitch.
Tip 6: Don’t Forget Command
A two-seamer that you cannot locate is worse than no two-seamer at all. Spend at least half of your two-seam development time on command drills, not just movement drills. My pitching command drills guide has the specific bullpen routines I use to build precise location.
Two-Seam Fastball by Age and Level
The two-seamer is one of the safest pitches a young pitcher can learn because it requires no extra arm action or wrist torque. That said, the timing of when to introduce it matters. Here is the progression I recommend.
Little League (9-12)
At this age, the focus should be 95 percent four-seam fastball and 5 percent changeup. A two-seamer is fine to introduce in catch play as a feel pitch, but I do not recommend throwing it in games. Young pitchers benefit more from refining command of a single fastball than from adding pitch variety. Save the two-seamer for the bullpen warmup.
Middle School (12-14)
This is the right window to start adding the two-seamer to bullpens and live work. The grip and mechanics are simple enough that a fourteen-year-old can pick it up in two or three bullpen sessions. Keep usage low in games, maybe 10 to 15 percent, and focus on the inside corner against right-handed hitters.
High School (14-18)
High school is where the two-seamer becomes a real weapon. By this point, hitters are advanced enough that a straight fastball is not enough to navigate a lineup three times. A two-seamer that runs onto the hands of a varsity right-handed hitter is one of the most effective pitches in the high school game. Usage of 20 to 30 percent is normal for high school pitchers who have command of the pitch.
College and Pro
At the college level and beyond, the two-seamer is one of the most-used pitches in baseball. Many starting pitchers throw it 25 to 40 percent of the time. Bullpen specialists may rely on it as their primary fastball if their movement profile is heavy on horizontal run. Sinkerballers can throw it up to 60 percent of the time, though that requires elite command.
Arm Care for Two-Seamer Throwers
The two-seamer is gentle on the arm compared to breaking balls, but any added pitch type means added stress over a season. I always make sure my pitchers are following a comprehensive arm care routine when they add a two-seamer. The right warmup, the right post-throwing recovery, and a real strength program for the rotator cuff and forearm are non-negotiable. My baseball arm care guide covers the daily routine in detail.
Pay special attention to your forearm flexor mass after two-seam bullpens. The pitch puts slightly more load on the middle and index fingers, which routes through the forearm muscles that attach to the medial elbow. Forearm soreness after a two-seamer session is not unusual; sharp pain in the elbow is a warning sign. If you feel sharp elbow pain, stop throwing, ice, and see a doctor before the next bullpen.
How to Sequence the Two-Seamer in a Game
A pitch is only as good as the way you use it. Here are the sequences I run with my pitchers when the two-seamer is part of the arsenal.
Right-handed pitcher vs right-handed hitter: Start with a four-seamer up and away to establish the outer half. Follow with a two-seamer on the inside corner for a called strike. Now the hitter cannot lean. Finish with a slider off the outside corner or a changeup down and away.
Right-handed pitcher vs left-handed hitter: Open with a two-seamer that starts middle and runs to the outside corner. The hitter sees fastball and lets it ride for a called strike. Follow with a four-seamer up and in to back them off the plate. Finish with a changeup or sinker low and away.
Pitch in a double-play count: Two-seamer at the knees, arm-side corner, full intent. The pitch is designed to produce ground balls, and a hitter swinging defensively in a 3-2 count with a runner on first is exactly the situation you want.
Pitch in a chase count: Two-seamer that starts at the inside corner and runs off the plate to a righty. The hitter sees fastball and commits; the ball ends up on the hands but off the plate. Swing-and-miss or jam shot.
Building a Practice Schedule Around the Two-Seamer
Adding a new pitch is a multi-month process. Do not expect to learn a two-seamer in one bullpen and use it in your start the next week. Here is the schedule I lay out for pitchers who are adding the pitch in the offseason.
| Week | Focus | Volume |
|---|---|---|
| 1-2 | Grip and catch play only; no mound work | 20 to 30 throws per session, 3 sessions per week |
| 3-4 | Flat-ground intent throws and one-knee drills | 30 to 40 throws per session, 3 sessions per week |
| 5-6 | First bullpens with two-seamers mixed in | 10 to 15 two-seamers per bullpen, 2 bullpens per week |
| 7-8 | Bullpens with target work; live BP introduction | 15 to 20 two-seamers per bullpen, one live BP per week |
| 9-12 | Simulated games; in-game usage at low percentage | 5 to 10 two-seamers per outing |
| 13+ | Full integration into game plan and arsenal | Usage based on game plan, up to 30 percent |
Frequently Asked Questions
Is a two-seam fastball the same as a sinker?
Close, but not identical. Both pitches use a similar grip on the long seams and both produce arm-side run and sink. The difference is emphasis. A two-seamer typically has more horizontal run and less depth; a sinker has more depth and slightly less run. Many big-league teams classify the two pitches together based on a pitcher’s spin axis and movement profile, but they are useful to think of as separate options because the grip and finish differ slightly.
How much slower is a two-seamer than a four-seamer?
Usually 1 to 3 miles per hour. Anything more than 3 mph slower and the pitch starts to look like a different pitch type to the hitter, which removes the deception advantage. If your two-seamer is 5 mph slower than your four-seamer, you are probably gripping it too tight or slowing your arm down at release.
Can a lefty throw a two-seamer?
Absolutely. Left-handed pitchers get arm-side run that moves toward a left-handed hitter and away from a right-handed hitter. The grip and mechanics are identical to a righty’s; the movement just mirrors. Lefty two-seamers are especially deadly against left-handed hitters because the pitch buries onto the hands of same-handed batters.
How do I know if my two-seamer is actually moving?
Three ways. First, watch the catcher’s glove. A real two-seamer will move the glove four to ten inches arm-side from where the catcher set it. Second, use slow-motion video; you can see the seam orientation rotating around an offset axis. Third, use a tracking tool like Rapsodo or TrackMan; spin axis should be tilted toward horizontal compared to your four-seamer.
Should I throw a two-seamer if I already throw a sinker?
Maybe. If your sinker has heavy depth and limited run, a two-seamer can add a complementary horizontal-run pitch that attacks a different part of the zone. If your sinker already has heavy run and decent depth, the two-seamer would be redundant. Save the bullets and develop another pitch type like a changeup or slider.
Will a two-seamer hurt my arm?
It should not, as long as your mechanics are sound and you are not yanking your wrist at release. The two-seamer is a fastball; the load on the arm is the same as a four-seamer. Where pitchers get into trouble is when they try to manufacture extra movement by twisting the wrist or pronating aggressively. Keep your mechanics clean and the pitch is safe.
What’s the best count to throw a two-seamer?
0-0 for a first-pitch strike, 1-1 to get back ahead, and 1-2 or 0-2 as a chase pitch off the plate. Pitchers who only throw two-seamers in 0-2 counts let hitters off the hook in early counts; pitchers who throw them in every count get hammered when they make mistakes. The sweet spot is mixing locations and counts so the hitter cannot eliminate the pitch.
How long does it take to learn a two-seamer?
For most pitchers, two to four weeks to get consistent movement in catch play, six to eight weeks to throw it in bullpens with command, and three months to use it confidently in games. Pitchers who already throw a four-seamer with good mechanics learn faster than pitchers who are still building their delivery.
What spin rate should my two-seamer have?
Roughly 1,900 to 2,250 rpm for most pitchers. Lower than that and you are usually losing too much velocity; higher than that and the spin axis is probably too vertical, which means you are throwing a slow four-seamer instead of a true two-seamer. Spin axis matters more than spin rate in absolute terms.
Should I throw it from the windup or the stretch?
Both. The two-seamer works the same from either delivery. Pitchers with runners on base often lean on the two-seamer because of its ground-ball potential, which produces double plays. From the windup with no one on, the two-seamer is a great early-count strike to set up the rest of your arsenal.
Final Thoughts on Adding the Two-Seamer
The two-seam fastball is one of the highest-return additions any pitcher can make to their arsenal. The grip is simple, the mechanics are identical to a four-seamer, and the movement profile creates ground balls, jam shots, and weak contact at every level of baseball. I have watched fourteen-year-olds add the pitch in three bullpens and immediately become harder to hit. I have watched college pitchers use the two-seamer to extend their careers into pro ball. It works because it is honest. You are not tricking the hitter with arm slot games or fake outs. You are giving them a fastball that finishes somewhere different than where it started, and that is enough.
Start with the grip. Drill it until you can find it in the dark. Then take it to the mound and throw it like a fastball, with full intent and a clean release. Be patient through the first few bullpens when nothing moves the way you want it to. The pitch reveals itself once you stop trying to manufacture movement and start trusting the seams. By the time the season opens, your two-seamer will be a real weapon, and you will wonder how you ever pitched without it.
If you want to keep building your pitching toolkit, my complete pitching grips guide and my how to pitch in baseball overview cover the rest of the arsenal. The two-seamer is one pitch in a complete picture, and the more pitches you command, the harder you become to face.