Every player throws, and sports-medicine groups advise learning sound basic throwing before any pitching: basic throwing first, then the fastball, then the change-up. In a lab study of 169 pitchers, 9–13-year-olds who did more of five basic mechanics correctly had lower shoulder and elbow loads. A good throw is a chain: you turn sideways, step toward the target, the hips turn, then the shoulders, then the arm, and the arm keeps moving after release so the body can slow it down. From the side, the camera can read your throwing sequence, how much you use your body versus only your arm, and your follow-through; it can't see your grip, the ball, or the forces on your arm.
Grip and turn sideways
Hold the ball with a four-seam grip: two fingers on top across the seams, thumb underneath. If your hand is small, use three fingers on top. Keep the grip relaxed but firm; don't choke the ball.
fingertips on the seams, a little space between ball and palm.
Turn sideways so your glove-side shoulder and hip point at the target. A right-hander's left shoulder faces the target. Keep that front side closed until your front foot lands.
you are looking at the target over your front shoulder.
Break your hands and take the ball out of the glove with your fingers on top and palm facing down. The throwing arm swings down, back, around and up. The glove stays in front of you, aimed at the target.
the hand stays on top of the ball as the arm comes up.
Step, arm up, hips then shoulders
Step straight toward the target with your glove-side foot. Land with the foot slightly closed, not pointing open, and the front knee bent and firm, not locked. Studies of young pitchers link an open front foot with the hips turning too early and more force on the shoulder and elbow.
your stride foot lands on a line to the target.
As the front foot lands, have the throwing arm up: elbow at about shoulder height and bent, ball up and pointing away from the target. In lab studies of young pitchers, the upper arm was raised about 78–95° from the trunk and the elbow bent about 74–85° at front-foot landing. Keep the elbow at least at shoulder height through release.
arms and shoulders make a rough "T" when the foot lands.
After the front foot lands, let the hips turn toward the target first, then the chest, then the arm whips through. Research describes this order: stride, pelvis rotation, upper-trunk rotation, elbow extension, shoulder rotation, then wrist. Professional pitchers turned the upper trunk later in the throw than youth, high school and college pitchers and had lower shoulder torque.
the hips pull the shoulders around; the arm comes last.
Release and full follow-through
Release the ball out in front of your throwing shoulder with your eyes on the target and your head on line with it. The elbow is slightly bent at release, not snapped straight.
you let go out in front, not beside your ear.
Let the arm keep going after release, across your body, while the glove arm comes in and down between your hip and chest. Your back foot comes off the ground and your weight carries toward the target. After release the whole body helps slow the arm down, so don't stop the arm short.
balanced over your front foot, arm relaxed and finished low.
Arm care
Warm up before you throw hard: loosen up first, then play catch at short distances and move back gradually. Never throw with a sore arm. If your elbow or shoulder hurts, stop throwing and see a sports-medicine doctor before throwing again.
easy throws first, effort later.
Stop when you see fatigue: throws getting slower or less accurate, the body standing up straighter, the elbow dropping, or more time between throws. If you also pitch, follow MLB/USA Baseball Pitch Smart daily limits and rest days for your age (for example, ages 9–10: up to 75 pitches a day, and 66 or more pitches needs 4 days of rest), don't pitch and catch in the same game, and take at least 2–3 months a year off overhead throwing.
you stop while your mechanics still look the same.
Feel it
A good throw feels like it starts from the ground: sideways, step on a line to the target, arm up as the foot lands, hips turn, then chest, then arm, and a relaxed finish across the body with your weight going forward. If the throw feels like it is all shoulder and elbow, or your arm stops right after release, the body isn't doing its share.
Fix-its
- You throw all arm, standing square with no step Turn sideways with the glove shoulder at the target, step on a line toward it, and let the hips turn before the chest.
- Your front foot steps open or across your body Lay a line on the ground to the target and land on it with the foot slightly closed. An open foot lets the hips turn too early.
- Your elbow is below your shoulder when the front foot lands Take the ball out with the hand on top and get the arm up as you stride. If the elbow starts dropping late in a session, treat it as fatigue and stop.
- Your front shoulder flies open early Keep the glove-side hip and shoulder closed until the front foot is down; use the two-knee toss to practise closing the front shoulder.
- Your glove flies out to the side Bring the glove arm in and down so it finishes between your hip and chest.
Drill
- Four-seam toss (Little League): catch the ball with two hands, find the four-seam grip, and toss it back once your partner shows a two-hand target. 15–20 throws.
- Two-knee partner toss, about 10 feet apart: upper body only. Close the front shoulder and keep the elbow and hand high.
- One-knee partner toss: same distance, now add reaching the front side toward the target and breaking the hands down the middle of the body.
- Balanced-landing throws to a partner 15–30 feet away: full throw, then hold your balance over the front foot after release.
- Film from the side with slow motion (120 fps or more): check that the elbow is at about shoulder height when the front foot lands, the hips start turning before the shoulders, and the arm finishes across the body. Film once from behind to check the stride lands on the line to the target.
By position
Every position uses this same basic throw. Infielders, outfielders and catchers add their own footwork in front of it (for example a crow hop in the outfield or a quick transfer behind the plate); those are covered in their own lessons. Get the basic throw right first, then add the position footwork.
Sources
- Baseball Canada — Pitching Mechanics
- American Sports Medicine Institute — Position Statement for Adolescent Baseball Pitchers (updated 2013)
- Greiner JJ et al. — Pitching Behaviors in Youth Baseball: Comparison With the Pitch Smart Guidelines, Orthop J Sports Med (2021)
- Thompson SF et al. — Youth Baseball Pitching Mechanics: A Systematic Review, Sports Health (2018), full text via Europe PMC
- Fleisig GS, Barrentine SW, Escamilla RF, Andrews JR — Biomechanics of overhand throwing with implications for injuries, Sports Med (1996), abstract via Europe PMC
- Aguinaldo AL, Buttermore J, Chambers H — Effects of upper trunk rotation on shoulder joint torque among baseball pitchers of various levels, J Appl Biomech (2007), abstract via Europe PMC
- Davis JT et al. — The effect of pitching biomechanics on the upper extremity in youth and adolescent baseball pitchers, Am J Sports Med (2009), abstract via Europe PMC
- Little League University — Backyard Tip: Four-Seam Toss
Last checked 2026-10-26.