John Klein
#65 P · B/T: R/R · 6' 5", 225 lb · Age 24 · Brooklyn Park, MN, USA · MLB debut 2026 · Draft: 2022 · Toronto Blue Jays
Career Graph
Pitching
| Season | Team | W | L | SV | BS | G | GS | QS | IP | IP/G | SO | K/9 | BB/9 | ERA | FIP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | MIN | 0 | 1 | 0 | 0 | 3 | 0 | 0 | 4.1 | 1.4 | 2 | 4.2 | 8.3 | 4.15 | 7.95 | -0.1 |
| 2026 | TOR | 0 | 1 | 0 | 0 | 4 | 0 | 0 | 8.1 | 2.1 | 7 | 7.6 | 6.5 | 2.16 | — | — |
| Career | 0 | 2 | 0 | 0 | 7 | 0 | 0 | 12.2 | 1.8 | 9 | 6.4 | 7.1 | 2.84 | — | -0.1 |
| Season | Team | W | L | SV | BS | G | GS | QS | IP | IP/G | SO | K/9 | BB/9 | ERA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||||||||
| 2025 | STP | 0 | 5 | 0 | 0 | 7 | 4 | 0 | 25.2 | 3.7 | 33 | 11.6 | 4.6 | 6.66 |
| 2026 | STP | 2 | 4 | 0 | 0 | 24 | 14 | — | 64.0 | 2.7 | 74 | 10.4 | 4.8 | 5.91 |
| 2026 | BUF | 2 | 4 | 0 | 0 | 32 | 19 | — | 86.1 | 2.7 | 95 | 9.9 | 5.3 | 6.36 |
| AAA Total | 4 | 13 | 0 | 0 | 63 | 37 | 0 | 176.0 | 2.8 | 202 | 10.3 | 5.0 | 6.24 | |
| Double-A (AA) | ||||||||||||||
| 2025 | WCH | 7 | 5 | 0 | 1 | 24 | 11 | 0 | 80.2 | 3.4 | 95 | 10.6 | 2.7 | 3.12 |
| AA Total | 7 | 5 | 0 | 1 | 24 | 11 | 0 | 80.2 | 3.4 | 95 | 10.6 | 2.7 | 3.12 | |
| High-A (A+) | ||||||||||||||
| 2023 | CR | 0 | 0 | 0 | 0 | 1 | 1 | — | 5.0 | 5.0 | 4 | 7.2 | 1.8 | 3.60 |
| 2024 | CR | 8 | 3 | 0 | 0 | 22 | 20 | — | 100.1 | 4.6 | 90 | 8.1 | 3.4 | 4.57 |
| A+ Total | 8 | 3 | 0 | 0 | 23 | 21 | — | 105.1 | 4.6 | 94 | 8.0 | 3.3 | 4.53 | |
| Single-A (A) | ||||||||||||||
| 2023 | FTM | 2 | 1 | 0 | 0 | 6 | 6 | — | 30.1 | 5.1 | 30 | 8.9 | 3.9 | 2.97 |
| A Total | 2 | 1 | 0 | 0 | 6 | 6 | — | 30.1 | 5.1 | 30 | 8.9 | 3.9 | 2.97 | |
| Rookie (Rk) | ||||||||||||||
| 2022 | F-TWI | 0 | 0 | 0 | 0 | 2 | 0 | — | 2.0 | 1.0 | 2 | 9.0 | 4.5 | 0.00 |
| 2023 | F-TWI | 0 | 3 | 0 | 0 | 6 | 6 | — | 23.0 | 3.8 | 27 | 10.6 | 3.5 | 5.87 |
| Rk Total | 0 | 3 | 0 | 0 | 8 | 6 | — | 25.0 | 3.1 | 29 | 10.4 | 3.6 | 5.40 | |
| Minors Total | 21 | 25 | 0 | 1 | 124 | 81 | 0 | 417.1 | 3.4 | 450 | 9.7 | 4.0 | 4.92 | |
Fielding
| Season | Team | Pos | G | Inn | PO | A | E | FPCT |
|---|---|---|---|---|---|---|---|---|
| 2026 | MIN | P | 3 | 4.1 | 0 | 0 | 0 | .000 |
| 2026 | TOR | P | 4 | 8.1 | 0 | 0 | 0 | .000 |
| Career | P | 7 | 12.2 | 0 | 0 | 0 | — |
| Season | Team | Pos | G | Inn | PO | A | E | FPCT |
|---|---|---|---|---|---|---|---|---|
| Triple-A (AAA) | ||||||||
| 2025 | STP | P | 7 | 25.2 | 1 | 0 | 0 | 1.000 |
| 2026 | STP | P | 24 | 64.0 | 4 | 6 | 1 | .909 |
| 2026 | BUF | P | 32 | 86.1 | 5 | 8 | 1 | .929 |
| AAA Total | — | 63 | 176.0 | 10 | 14 | 2 | .923 | |
| Double-A (AA) | ||||||||
| 2025 | WCH | P | 24 | 80.2 | 1 | 3 | 6 | .400 |
| AA Total | — | 24 | 80.2 | 1 | 3 | 6 | .400 | |
| High-A (A+) | ||||||||
| 2023 | CR | P | 1 | 5.0 | 0 | 2 | 0 | 1.000 |
| 2024 | CR | P | 22 | 100.1 | 4 | 2 | 0 | 1.000 |
| A+ Total | — | 23 | 105.1 | 4 | 4 | 0 | 1.000 | |
| Single-A (A) | ||||||||
| 2023 | FTM | P | 6 | 30.1 | 1 | 4 | 0 | 1.000 |
| A Total | — | 6 | 30.1 | 1 | 4 | 0 | 1.000 | |
| Rookie (Rk) | ||||||||
| 2022 | F-TWI | P | 2 | 2.0 | 0 | 0 | 0 | .000 |
| 2023 | F-TWI | P | 6 | 23.0 | 0 | 0 | 0 | .000 |
| Rk Total | — | 8 | 25.0 | 0 | 0 | 0 | — | |
| Minors Total | — | 124 | 417.1 | 16 | 25 | 8 | .837 | |
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