Youth Baseball Arm Care Program: Daily Routine for 10U-18U
Arm injuries are the most preventable problem in youth baseball. Here is a complete daily arm care program for players ages 10 through 18.
Youth arm injuries are at an all-time high — and most of them are preventable. UCL tears, shoulder labrum issues, and elbow stress fractures that used to be adult problems are now showing up in 12 and 13 year olds. The culprit is almost always overuse combined with poor arm care habits. Here is a complete program to protect your player's arm for the long haul.
The Foundation: Daily Band Work
The most important arm care habit costs $30 and takes 10 minutes. Resistance band exercises — specifically the Jaeger band protocol — strengthen the rotator cuff, scapular stabilizers, and forearm muscles that protect the elbow. Do them every day, not just on throwing days.
The Daily Band Routine (10 minutes)
- Arm circles — 10 forward, 10 backward. Warm up the shoulder capsule.
- Diagonal pulls — 15 reps each direction. Scapular stability and rotator cuff activation.
- External rotation — 20 reps each arm. The most important exercise for pitcher arm health.
- Internal rotation — 20 reps each arm. Balance the external rotation work.
- Protraction/retraction — 15 reps. Scapular control and shoulder blade mobility.
- Reverse fly — 15 reps. Posterior shoulder strength.
Use a light resistance band for younger players (10U-12U) and medium resistance for older players. The goal is muscle endurance, not max strength — never go to failure on band work.
Long Toss Progression
Long toss is not just about arm strength — it is the best tool for developing arm speed, shoulder range of motion, and the kinematic chain that powers a healthy throw. Done correctly, it is medicine for the arm. Done incorrectly, it is a source of injury.
Phase 1: Extension (build out)
Start at 60 feet and work out to your maximum distance over 10-15 minutes. Throw with intent but do not overthrow. When you reach maximum distance, the ball should fly slightly on a line — not sail up at a 45-degree angle. Arcing throws at maximum distance put stress on the arm without building arm speed.
Phase 2: Pulldown (come back in)
Once you reach maximum distance, come back in 15-20 feet at a time. At each distance, throw 2-3 balls with max intent — this is where arm speed develops. Stop at 90 feet and finish from there. Never pull down to less than 60 feet.
Long Toss by Age Group
| Age | Max Distance | Days Per Week |
|---|---|---|
| 10U | 90 feet | 3 days |
| 11U-12U | 120 feet | 3-4 days |
| 13U-14U | 150 feet | 4 days |
| 15U-18U | 180-200 feet | 4-5 days |
The most dangerous situation: A pitcher who throws 60 pitches on Saturday, then catches Sunday. Pitching and catching on back-to-back days — even under the pitch count limit — is one of the fastest paths to arm injury in youth baseball. Enforce a rule: if a player pitches, they do not catch the next day.
Warning Signs to Watch For
Pull a player immediately if they report any of the following. Do not let them pitch through it:
- Pain on the inside of the elbow (medial pain) — UCL stress
- Pain at the back of the shoulder — posterior impingement
- A sudden drop in velocity without explanation
- Tingling or numbness in the fingers
- Popping or clicking sensation in the elbow
- Elbow that stays bent and resists full extension
Post-Game Arm Care
After pitching, the arm needs active recovery — not ice. The research on post-game icing has shifted significantly in recent years. Current best practice is:
- 5 minutes of light band work immediately after pitching
- Gentle shoulder stretching (sleeper stretch, cross-body stretch)
- Walk or light activity to keep blood flowing for 20-30 minutes
- Ice only if there is acute pain or swelling — not as a routine