

| Regular Season | Playoffs | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | W | L | T | SO | SA | GAA | SV% | GP | W | L | T | SO | SA | GAA | SV% |
| 2014-15 | SHL | MoDo Hockey | 35 | 12 | 20 | 0 | 1 | 1049 | 3.12 | 0.905 | 4 | 4 | 0 | 0 | 2 | 98 | 0.50 | 0.980 |
| 2015-16 | AHL | Rochester Americans | 28 | 10 | 16 | 0 | 0 | 921 | 3.41 | 0.902 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2015-16 | NHL | Buffalo Sabres | 20 | 8 | 10 | 2 | 0 | 565 | 2.60 | 0.913 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2016-17 | AHL | Rochester Americans | 55 | 26 | 27 | 4 | 1 | 1678 | 2.87 | 0.909 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2016-17 | NHL | Buffalo Sabres | 1 | 0 | 1 | 0 | 0 | 36 | 3.06 | 0.917 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2017-18 | AHL | Rochester Americans | 44 | 21 | 12 | 14 | 2 | 1347 | 2.44 | 0.922 | 3 | 0 | 3 | 0 | 0 | 80 | 5.50 | 0.800 |
| 2017-18 | NHL | Buffalo Sabres | 5 | 1 | 2 | 0 | 0 | 123 | 2.00 | 0.935 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2018-19 | NHL | Buffalo Sabres | 37 | 15 | 14 | 5 | 2 | 1146 | 3.11 | 0.905 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | Buffalo Sabres | 34 | 17 | 14 | 3 | 1 | 1066 | 2.69 | 0.915 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2020-21 | NHL | Buffalo Sabres | 20 | 9 | 6 | 3 | 0 | 591 | 2.63 | 0.917 | -- | -- | -- | -- | -- | -- | -- | -- |
| 2021-22 | NHL | Boston Bruins | 41 | 26 | 10 | 2 | 1 | 1140 | 2.45 | 0.917 | 2 | 0 | 2 | 0 | 0 | 57 | 4.16 | 0.860 |
| 2022-23 | NHL | Boston Bruins | 49 | 40 | 6 | 1 | 2 | 1457 | 1.89 | 0.938 | 6 | 3 | 3 | 0 | 0 | 192 | 3.33 | 0.896 |
| 2023-24 | NHL | Boston Bruins | 40 | 22 | 10 | 7 | 2 | 1207 | 2.57 | 0.915 | 2 | 0 | 1 | 0 | 0 | 44 | 3.90 | 0.886 |
| 2024-25 | NHL | Ottawa Senators | 44 | 25 | 14 | 3 | 4 | 1229 | 2.72 | 0.910 | 6 | 2 | 4 | 0 | 1 | 150 | 2.84 | 0.880 |
| 2025-26 | NHL | Ottawa Senators | 37 | 20 | 9 | 7 | 2 | 897 | 2.77 | 0.886 | -- | -- | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 328 | 183 | 96 | 33 | 14 | 9457 | 2.57 | 0.914 | 16 | 5 | 10 | 0 | 1 | 443 | 3.29 | 0.885 | ||
| Year | Tournament | Team | GP | W | L | T | MP | SO | SA | GAA | SV% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | IIHF World Championship | Team Sweden | 3 | 1 | 2 | 0 | 185 | 1 | 87 | 2.26 | 0.920 |
| 2025 | Four Nations Face-off | Team Sweden | 1 | 0 | 0 | 1 | 41 | 0 | 17 | 2.88 | 0.882 |
| Season | League | Award |
|---|---|---|
| 2022-23 | NHL | Vezina Trophy |
| 2022-23 | NHL | William M. Jennings Trophy |