Michael Tonkin was 5-4 with an ERA of 4.44 and 190 strikeouts in 175 appearances for the Twins in his career.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | M. Tonkin | 2013 |  MIN | 9 | 0 | 0 | 0 | 0.79 | 10 | 0 | 0 | 0 | 11.1 | 9 | 1 | 6 | 0 | 3 | 0 | 6 | 0 | 47 | 1 | 7.94 | 2.38 | 3.33 | 0.00 | 21.3 | 6.4 | 1.06 | .265 | 4.76 | 20 | 2.07 | 52 | 7.15 | 2.4 | |
| 2 | | M. Tonkin | 2014 | MIN | 25 | 0 | 0 | 0 | 4.74 | 16 | 0 | 0 | 0 | 19.0 | 23 | 10 | 13 | 2 | 6 | 2 | 8 | 0 | 87 | 1 | 7.58 | 2.84 | 2.67 | 0.95 | 18.4 | 6.9 | 1.53 | .344 | 6.16 | 122 | 4.08 | 107 | 10.89 | -0.5 | |
| 3 | | M. Tonkin | 2015 | MIN | 26 | 0 | 0 | 0 | 3.47 | 19 | 0 | 0 | 0 | 23.1 | 21 | 9 | 9 | 4 | 9 | 1 | 10 | 2 | 99 | 1 | 7.33 | 3.47 | 2.11 | 1.54 | 19.2 | 9.1 | 1.29 | .258 | 3.47 | 85 | 5.01 | 123 | 8.10 | -2.4 | |
| 4 | | M. Tonkin | 2016 | MIN | 65 | 3 | 2 | .600 | 0 | 5.02 | 80 | 0 | 0 | 0 | 71.2 | 80 | 40 | 46 | 13 | 24 | 3 | 23 | 0 | 315 | 5 | 10.05 | 3.01 | 3.33 | 1.63 | 25.4 | 7.6 | 1.45 | .344 | 5.78 | 117 | 4.39 | 102 | 10.05 | -0.5 |
| 5 | | M. Tonkin | 2017 | MIN | 16 | 0 | 1 | .000 | 0 | 5.14 | 24 | 0 | 0 | 0 | 21.0 | 22 | 12 | 15 | 6 | 12 | 1 | 8 | 0 | 97 | 2 | 10.29 | 5.14 | 2.00 | 2.57 | 24.7 | 12.4 | 1.62 | .296 | 6.43 | 117 | 6.44 | 145 | 9.43 | -4.6 |
| 6 | | M. Tonkin | 2024 | MIN | 13 | 0 | 0 | 0 | 3.86 | 22 | 0 | 0 | 0 | 16.1 | 18 | 7 | 7 | 0 | 7 | 2 | 4 | 0 | 73 | 0 | 12.12 | 3.86 | 3.14 | 0.00 | 30.1 | 9.6 | 1.53 | .429 | 3.86 | 96 | 2.12 | 52 | 9.92 | 3.6 | |
| 7 | | M. Tonkin | 2025 | MIN | 21 | 2 | 1 | .667 | 0 | 4.88 | 19 | 0 | 0 | 0 | 24.0 | 20 | 13 | 13 | 3 | 8 | 5 | 7 | 0 | 103 | 1 | 7.13 | 3.00 | 2.38 | 1.13 | 18.4 | 7.8 | 1.17 | .250 | 4.88 | 119 | 4.79 | 115 | 7.50 | -1.7 |
| Total | 175 | 5 | 4 | .556 | 0 | 4.44 | 190 | 0 | 0 | 0 | 186.2 | 193 | 92 | 109 | 28 | 69 | 14 | 66 | 2 | 821 | 11 | 9.16 | 3.33 | 2.75 | 1.35 | 23.1 | 8.4 | 1.40 | .317 | 5.26 | 106 | 4.38 | 104 | 9.31 | -3.7 |
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