Michigan High School Pitch Count Rules (MHSAA)
- Last checked Nov 1, 2026
- By Julien Levadoux
Under MHSAA rules, Michigan high school pitchers may throw up to 105 pitches a day. Up to 25 pitches needs no rest; 76 or more needs 3 calendar days of rest. The other tables and the extra limits are below.
The MHSAA rest tables
High school (grades 9–12) · 105 pitches a day at most
| Pitches in a day | Rest before pitching again |
|---|---|
| 1–25 | None: may pitch the next day |
| 26–50 | 1 calendar day |
| 51–75 | 2 calendar days |
| 76–105 | 3 calendar days |
Middle school (grades 6–8) · 75 pitches a day at most
| Pitches in a day | Rest before pitching again |
|---|---|
| 1–25 | 1 calendar day |
| 26–50 | 2 calendar days |
| 51–75 | 3 calendar days |
Other limits
- A pitcher who reaches 105 in the middle of an at-bat may finish that batter (or until the inning ends) and must then be removed; there is no finish-the-batter exception to the days-of-rest requirement.
- Rest requirements follow the pitcher across levels (freshman, JV, varsity); pitches thrown at different levels on the same day are added together.
- A middle schooler playing on a high school team is governed by the high school limits.
- Example from MHSAA case play: a pitcher requiring two days of rest after pitching Monday is ineligible at any level until Thursday (calendar days).
- Teams must track pitch counts and, before each game, identify which pitchers are ineligible that day; pitches are recorded in GameChanger.
- A pitcher whose stats were not properly recorded/reported before the plate meeting may be ruled ineligible for that game.
- In the postseason a neutral person tracks the pitch count.
- Penalty: minimum penalty for a violation (exceeding the max or pitching before required rest) is forfeiture of the game (MHSAA Handbook Regulation V, Section 4(B)).
Source: MHSAA Baseball Pitch Count Information (MHSAA pitch count rule (2023-25 documents)). Checked Nov 1, 2026.
The calculator above is set to Michigan. Enter the pitches thrown and the day, and it shows the rest required and the first day the pitcher can throw again.
How to read the rule
Rest is counted in calendar days, after the day the pitcher threw. On the High school (grades 9–12) table, a pitcher who throws 63 pitches on a Tuesday needs 2 calendar days of rest, so the first day they can pitch again is Friday. The most rest any Michigan table requires is 3 days.
More than one table
Michigan doesn’t use one table for everyone. High school (grades 9–12): up to 105 pitches a day, 76+ pitches means 3 calendar days of rest. Middle school (grades 6–8): up to 75 pitches a day, 51+ pitches means 3 calendar days of rest. Pick the one that fits in the calculator; both are printed below it.
Where the rule comes from
These numbers are from the association’s own document: MHSAA Baseball Pitch Count Information, read as the MHSAA pitch count rule (2023-25 documents). Associations can change their rules between seasons, so if the season is about to start, check the association’s current baseball manual too. Your league or tournament may also set stricter limits than the state.
Keeping the count is usually the coaches’ job, often with both teams’ counts compared after the game. The pitch count log has a line for every pitcher and game.