Baseball Pitch Count Rules by Age (PitchSmart Guidelines)
Youth pitch limits and required rest are set by MLB and USA Baseball’s PitchSmart guidelines — the industry standard for protecting young arms. The tables below follow PitchSmart exactly. They apply to baseball; softball uses a different motion and is not covered.
Daily pitch limits by age
| Age group | Daily maximum |
|---|---|
| 6U – 8U | 50 pitches |
| 9U – 10U | 75 pitches |
| 11U – 12U | 85 pitches |
| 13U – 16U | 95 pitches |
| 17U – 18U / HS | 105 pitches |
Source: MLB PitchSmart pitching guidelines. These are hard daily caps, not targets.
Required rest by pitch count (9U–14U)
| Pitches in a day | Rest required |
|---|---|
| 1 – 20 | 0 days |
| 21 – 35 | 1 day |
| 36 – 50 | 2 days |
| 51 – 65 | 3 days |
| 66 – daily max | 4 days |
Ages 15U and up use higher thresholds (e.g., 4 days rest at 76+ pitches). Always follow your league’s official rules and the full PitchSmart chart.
Safety note: these limits are a floor, not a goal. Watch for fatigue signs regardless of count, honor rest between outings, and defer to your league’s official rulebook where it’s stricter.
How GameLense enforces PitchSmart
GameLense applies these exact PitchSmart limits automatically. As you log pitches, it calculates the required rest for each pitcher’s age group and flags anyone who isn’t yet available — so rest math never gets missed at the field, and rotation planning respects it days ahead. Softball teams are automatically exempted from PitchSmart math, since it doesn’t apply to the windmill motion.
Frequently asked questions
What are the pitch count limits by age?
Per MLB / USA Baseball PitchSmart, the daily maximums are: 50 pitches for ages 6U–8U, 75 for 9U–10U, 85 for 11U–12U, 95 for 13U–16U, and 105 for 17U–18U and high school. These are daily caps, not targets.
How many rest days does a pitcher need?
It depends on pitches thrown. For 9U–14U: 1–20 pitches require 0 rest days, 21–35 require 1, 36–50 require 2, 51–65 require 3, and 66 or more require 4 days of rest. Older groups (15U and up) use slightly higher thresholds. Always follow your league’s official rules and the full PitchSmart chart.
What is PitchSmart?
PitchSmart is a set of age-based pitching guidelines from Major League Baseball and USA Baseball, developed with sports-medicine experts (including ASMI) to reduce arm injuries in youth pitchers. It is the most widely adopted youth pitching safety standard.
Do pitch count rules apply to softball?
No. PitchSmart is built for the overhand baseball motion. The underhand windmill motion in softball has different mechanics and load, so PitchSmart’s pitch limits and rest math do not apply to softball pitchers.
What happens if a pitcher exceeds their pitch count?
Exceeding daily limits or throwing on insufficient rest raises the risk of overuse arm injuries, which are the primary concern PitchSmart is designed to prevent. Most leagues also enforce the limits as rules, with penalties for violations. Track pitches in real time so a pitcher is pulled at the cap, not after.
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