Table 3.
Pitching Volume Summary by Pitch Count, Pitcher Appearances, and Pitches Thrown
| Age Division a | ||||||||
|---|---|---|---|---|---|---|---|---|
| 8U | 9U | 10U | 11U | 12U | 13U | 14U | Total | |
| Pitch count occurrences, n (%) | ||||||||
| 1-20 pitches | 252 (21) | 179 (22) | 200 (27) | 261 (24) | 365 (25) | 152 (20) | 232 (23) | 1641 (23) |
| 21-35 pitches | 407 (35) | 307 (38) | 261 (35) | 338 (32) | 442 (31) | 206 (27) | 245 (24) | 2206 (32) |
| 36-50 pitches | 343 (29) | 213 (26) | 194 (26) | 261 (24) | 354 (25) | 190 (25) | 212 (21) | 1767 (25) |
| 51-65 pitches | 177 (15) | 71 (9) | 79 (11) | 143 (13) | 180 (13) | 142 (19) | 153 (15) | 945 (14) |
| >65 pitches | 0 (0) | 39 (5) | 11 (1) | 67 (6) | 91 (6) | 65 (9) | 162 (16) | 435 (6) |
| Appearances, % pitchers | ||||||||
| <25% games | 45.3 | 42.9 | 38.1 | 49.4 | 52.8 | 48.9 | 55.9 | 47.7 |
| 25%-50% games | 27.3 | 40.9 | 44.2 | 40.6 | 41.5 | 45.2 | 41.4 | 40.2 |
| >50% games | 27.3 | 16.2 | 17.7 | 10.0 | 5.7 | 5.9 | 2.6 | 12.0 |
| Percentage of total team pitches thrown, % pitchers | ||||||||
| <10% pitches | 57.6 | 55.8 | 50.3 | 61.9 | 59.1 | 57.0 | 55.9 | 56.9 |
| 10%-20% pitches | 29.5 | 34.4 | 44.2 | 28.1 | 34.6 | 27.4 | 35.5 | 33.5 |
| >20% pitches | 12.9 | 9.7 | 5.4 | 10.0 | 6.3 | 15.6 | 8.6 | 9.7 |
a Age divisions consisted of 8-and-under (8U) through 14-and-under (14U).