Why Your Son's Deadlift Predicts His Fastball
Most parents think throwing harder comes from throwing more — more lessons, more bullpens, more reps on the arm.
But after seven years and more than 1,500 athletes, our data points somewhere most people don't expect. The single strongest predictor of velocity in our older athletes isn't anything that happens on the mound. It's the deadlift.
Strength Comes First
For high school athletes and up, total-body strength — and the deadlift specifically — tracks more closely with velocity than almost anything else we measure. That's not opinion. That's seven years of athletes telling the same story.
It makes sense when you think about it. Throwing a baseball hard is a full-body act of force production. The arm is the last link in the chain, but the force starts at the ground and moves up through the legs, hips, and core. A stronger engine produces more velocity. The arm just delivers it.
That's why our athletes spend real time in the weight room. We're not trying to turn pitchers into powerlifters — we're building the foundation that lets them throw harder and stay healthy doing it.
For Youth Athletes, the Test Looks Different
You can't meaningfully test a deadlift on a nine-year-old. So at the youth level, we read velocity potential through bodyweight mastery instead. Three benchmarks tell us a lot:
10 pull-ups with perfect form
A full-depth squat, heels flat on the ground, full range of motion
15 to 20 push-ups with clean form
Here's the thing: most youth baseball players can't hit these — and it's not because they're weak. It's because they've never been asked to. Baseball kids tend to be skill-specific from a young age. They throw, they hit, they field. They rarely build the broad athletic base that a three-sport athlete naturally develops.
That's exactly the gap we close. We can progress every one of those movements. It just takes getting the reps in — at our facility and at home between sessions.
A Velocity Ceiling Isn't a Bad Thing
When a youth athlete can't hit those benchmarks, there's a real ceiling on how hard he can throw right now. But that ceiling is often protecting him.
Big, sudden velocity jumps at young ages are a red flag, not a trophy — even when it's the thing everyone wants. Those are growing joints and developing muscles, and rapid change is something to watch carefully, not chase.
That's why we don't believe in an arm-focused approach to velocity at the youth level. We push development, not radar gun numbers. Build the movement, build the strength, and velocity shows up on its own — at a healthy pace, over a healthy timeline.
Two Windows: Build, Then Refine
Training looks different depending on the time of year.
In the off season — a solid winter block of three to five months — we build the foundation. Strength goes up, the bodyweight benchmarks improve, and that's where the trackable, healthy velocity gains come from.
In season, we shift from building to refining. A lot of youth athletes have coordination issues or scapular instability — their shoulders are essentially floating, so they can't stabilize and transfer force efficiently no matter how hard they try. Cleaning up that movement pattern can unlock velocity mid-season without adding a single pound of load — and it protects the arm at the same time.
Either way, the rule holds: if we ever see a big, unexpected jump, we tell the family. Keep an eye on your son, and let us know if anything feels different than before.
What This Means for Your Athlete
If your son wants to throw harder, the answer probably isn't more throwing. It's a stronger, better-moving athlete underneath the arm.
That's what we build at Top Velocity Dayton — and the data backs it up.
Want to know where your son's strength and movement stack up? Reach out at topvelocitydayton@p413sports.com or visit p413sports.com.
