| Year | Team | W | L | G | IP | ERA | WHIP | K | BB | HR | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | Washington Nationals | 4 | 1 | 40 | 47.2 | 3.59 | 1.22 | 47 | 15 | 4 | 8.87 | 2.83 |
| 2019 | Washington Nationals |
| 6 |
| 9 |
| 78 |
| 71.1 |
| 4.54 |
| 1.26 |
| 81 |
| 26 |
| 5 |
| 10.22 |
| 3.28 |
| 2020 | Washington Nationals | 2 | 0 | 22 | 23.2 | 3.80 | 1.27 | 28 | 10 | 1 | 10.65 | 3.80 |
| 2021 | Washington Nationals | 2 | 3 | 45 | 42.2 | 6.33 | 1.41 | 44 | 15 | 11 | 9.28 | 3.16 |
| 2023 | Los Angeles Dodgers | 1 | 0 | 5 | 8.0 | 7.88 | 1.38 | 9 | 5 | 2 | 10.13 | 5.63 |
| 2024 | Houston Astros | 0 | 1 | 1 | 0.0 | — | — | 0 | 0 | 0 | — | — |
| 2025 | Atlanta Braves | 0 | 0 | 5 | 6.1 | 11.37 | 2.21 | 7 | 4 | 3 | 9.95 | 5.68 |
| Career | — | 15 | 14 | 196 | 199.2 | 4.96 | 1.32 | 216 | 75 | 26 | 9.74 | 3.38 |
