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Frank Koopmann Jr
| P| 6' 4"| Hit/Throw: L/R
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ERA9.64
W-L0-1
IP4.2
SO5
BB3
H9
Fielding
Columns
| 2026 | Rockford | 3 | 1 | 3 | 0 | 1 | 1 | 0 | 100.00% | 0 | 0 | 0 | 0 | 0 | 0.33 |
| 2025 | Rockford | 2 | 0 | 2 | 0 | 1 | 1 | 0 | 100.00% | 0 | 0 | 0 | 0 | 0 | 0.50 |
Pitching
Columns
| 2026 | Rockford | 1 | 3 | 3 | 9.64 | 4.2 | 0 | 9 | 7 | 5 | 3 | 5 | 0 | 29 | 25 | 3 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 2025 | Rockford | 0 | 2 | 2 | 4.50 | 2 | 0 | 1 | 1 | 1 | 1 | 2 | 0 | 8 | 7 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |