Pitch Count Rules:
Maximum Pitch Counts
11-12yrs old – 85 pitches per day
9-10yrs old – 75 pitches per day
7-8yrs old – 50 pitches per day
Note 1: A pitcher who delivers 41 or more pitches in a game cannot play the position of catcher for the remainder of that day.
Note 2: Any player who has played the position of catcher in four or more innings in a game is not eligible to pitch on that calendar day.
Pitchers league age 14 and under must adhere to the following rest requirements:
- If a player pitches 66 or more pitches in a day, four (4) calendar days of rest must be observed.
- If a player pitches 51-65 pitches in a day, three (3) calendar days of rest must be observed.
- If a player pitches 36-50 pitches in a day, two (2) calendar days of rest must be observed.
- If a player pitches 21-35 pitches in a day, one (1) calendar days of rest must be observed.
- If a player pitches 1-20 pitches in a day, no (0) calendar day of rest is required.
Exception: If a pitcher reaches a day(s) of rest threshold while facing a batter, the pitcher may continue to pitch until any one of the following conditions occurs: (1) that batter reaches base; (2) that batter is retired; or (3) the third out is made to complete the half-inning or the game. The pitcher will only be required to observe the calendar day(s) of rest for the threshold he/she reached during that at-bat, provided that pitcher is removed or the game is completed before delivering a pitch to another batter.”
Details here: https://www.littleleague.org/playing-rules/pitch-count/