The best medicine ball exercises for pitchers are the rotational scoop toss, step-behind rotational throw, shot-put throw, overhead slam, and chest pass. They build the hip and core rotation that drives velocity with little stress on the arm. Keep the ball light (about 2 to 4 lb under 12, 4 to 6 lb at 12 to 14, 4 to 8 lb in high school), throw it fast, and do 2 or 3 sessions a week.
If you want your son to throw harder without putting more stress on his arm, a medicine ball is one of the best tools there is. It trains the thing that actually drives velocity, the legs and hips and core turning fast and in the right order, and the arm barely does any of the work.
Here are the best medicine ball exercises for pitchers, how heavy the ball should be, and how to use them safely at any age.
Why medicine balls help pitchers
Velocity starts in the ground and builds up through the hips and trunk before the arm ever gets involved. Medicine ball throws train that same chain: a powerful, fast turn of the lower body and core. Because the ball is thrown with both hands and the movements are mostly rotational, the throwing arm isn’t stressed the way it is on the mound. Our guide on hip-shoulder separation explains why that rotation matters so much.
How heavy should the ball be?
Lighter than most people think. The goal is speed, not strain. If the ball is so heavy that the movement slows down, it’s too heavy.
| Age | Typical ball weight |
|---|---|
| Under 12 | 2 to 4 lb |
| 12 to 14 | 4 to 6 lb |
| High school | 4 to 8 lb |
These are general starting points, not rules. When in doubt, go lighter and faster. A rubber ball that bounces off a sturdy wall makes the exercises easier and more fun.
The best medicine ball exercises for pitchers
Rotational scoop toss
Stand sideways to a wall, like his pitching stance. Hold the ball at the back hip, then turn the hips and chest hard and throw it into the wall. This is the most pitching-like throw there is.
Step-behind rotational throw
Same as the scoop toss, but he steps his back foot behind the front first to build momentum. Great for linking the stride to the turn.
Shot-put throw
Ball at the back shoulder, elbow up, then push it into the wall by turning the hips first. Keep it light and smooth; this one involves the arm a little more.
Overhead slam
Lift the ball overhead and slam it into the ground as hard as he can, using the core and the whole body. Builds power and is easy to learn.
Chest pass
Face the wall, step forward, and push the ball with both hands. Simple power for younger kids.
Do the rotational throws from both sides, not just his pitching side, to keep his body balanced.
“Fast and light beats heavy and slow.”
If the movement slows down, the ball is too heavy. Smooth is fast.How to fit it into his week
Two or three times a week is plenty. Start with 2 to 3 sets of 5 to 8 throws per exercise, with full rest between sets so every throw is fast. Quality matters more than volume: stop when the throws slow down. Medicine ball work fits well in the offseason and on non-throwing days, and it belongs before strength work, while he’s fresh. For the bigger picture, see our guide to strength training for youth pitchers.
Safety basics
- Have an adult or trainer teach the movements first. Form before force.
- Use a sturdy wall (concrete or brick) and a rubber ball that bounces predictably.
- Never throw a medicine ball like a baseball with one arm.
- Keep the day after a big outing light.
- If anything hurts, especially the elbow, shoulder, or lower back, stop. If it keeps hurting, see a doctor.
Worried about strength work and growth? Our guide on whether lifting stunts growth covers what the research says.
Is his body sharing the work?
Medicine ball power only turns into velocity if his delivery uses the legs and hips. Upload one video and we’ll show you how well his body transfers energy, frame by frame. Free. For any pain, always see a doctor first.
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Medicine ball throws train the hip and core rotation that drives velocity, with very little stress on the throwing arm. Use a light ball (about 2 to 4 lb under 12, 4 to 6 lb at 12 to 14, 4 to 8 lb in high school), throw it fast, and stick to rotational scoop tosses, step-behind throws, shot-puts, slams, and chest passes, two or three times a week. It won’t guarantee extra miles per hour, but combined with good mechanics, it builds the engine. Little things now, big numbers later.
Common questions
Do medicine ball throws help pitching velocity?
They can help build the hip and core rotation that drives velocity, with little stress on the throwing arm. They work best combined with good mechanics and a sensible strength program. No exercise guarantees extra velocity.
What weight medicine ball should a pitcher use?
Light enough to throw fast. Roughly 2 to 4 lb for kids under 12, 4 to 6 lb for ages 12 to 14, and 4 to 8 lb for high schoolers. If the movement slows down, the ball is too heavy.
Are medicine ball exercises safe for kids?
Yes, when the ball is light, the movements are taught properly, and an adult supervises. Stop any exercise that causes pain.
How often should pitchers do medicine ball throws?
Two or three times a week, with 2 to 3 sets of 5 to 8 throws per exercise. Rest fully between sets so every throw is fast.
What is the best medicine ball exercise for pitchers?
The rotational scoop toss into a wall is the most pitching-like, because it trains the same fast hip and trunk turn used in a delivery.
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We'll show you exactly where his mechanics are costing him, and what to work on first.
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