| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | Kansas City Royals | 0 | 0 | 2 | 3.2 | 22.09 | 3.55 | 1 | 3 | 2 | 2.45 | 7.36 |
| 2021 |
| Washington Nationals |
| 1 |
| 2 |
| 40 |
| 35.2 |
| 3.53 |
| 1.26 |
| 30 |
| 15 |
| 4 |
| 7.57 |
| 3.79 |
| 2022 | Washington Nationals | 2 | 0 | 51 | 59.1 | 3.34 | 1.37 | 46 | 26 | 7 | 6.98 | 3.94 |
| 2023 | Washington Nationals | 4 | 1 | 44 | 50.0 | 5.22 | 1.32 | 43 | 13 | 12 | 7.74 | 2.34 |
| Career | — | 7 | 3 | 137 | 148.2 | 4.48 | 1.38 | 120 | 57 | 25 | 7.26 | 3.45 |
