| Position | G |
| Birth city | Lugnvik, undefined, SWE |
| Birth date | 1993-07-31 (33) |
| Height | 6'4'' |
| weight (lb) | 223 |
| Drafted | pick 12 round 6 by BUF in 2012 |
season | L | T. | GP | GA | GAA | W | L | OT | SO | S% | G | A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2015-16 | NHL | Buffalo Sabres | 20 | 49 | 2.60 | 8 | 10 | 2 | 0 | 0.913 | 0 | 0 |
| 2016-17 | NHL | Buffalo Sabres | 1 | 3 | 3.06 | 0 | 1 | 0 | 0 | 0.917 | 0 | 0 |
| 2017-18 | NHL | Buffalo Sabres | 5 | 8 | 2.00 | 1 | 2 | 0 | 0 | 0.935 | 0 | 0 |
| 2018-19 | NHL | Buffalo Sabres | 37 | 109 | 3.11 | 15 | 14 | 5 | 2 | 0.905 | 0 | 1 |
| 2019-20 | NHL | Buffalo Sabres | 34 | 91 | 2.69 | 17 | 14 | 3 | 1 | 0.915 | 0 | 0 |
| 2020-21 | NHL | Buffalo Sabres | 20 | 49 | 2.63 | 9 | 6 | 3 | 0 | 0.917 | 0 | 0 |
| 2021-22 | NHL | Boston Bruins | 41 | 95 | 2.45 | 26 | 10 | 2 | 1 | 0.917 | 0 | 1 |
| 2022-23 | NHL | Boston Bruins | 49 | 91 | 1.89 | 40 | 6 | 1 | 2 | 0.938 | 1 | 0 |
| 2023-24 | NHL | Boston Bruins | 40 | 103 | 2.57 | 22 | 10 | 7 | 2 | 0.915 | 0 | 1 |
| 2024-25 | NHL | Ottawa Senators | 44 | 112 | 2.72 | 25 | 14 | 3 | 4 | 0.910 | 0 | 2 |
| 2025-26 | NHL | Ottawa Senators | 49 | 131 | 2.73 | 28 | 12 | 8 | 3 | 0.891 | 0 | 1 |
| 2026-27 | NHL | Ottawa Senators | 5 | 6 | 1.27 | 5 | 0 | 0 | 0 | 0.948 | 0 | 0 |
| NHL Total | 345 | 847 | 2.55 | 196 | 99 | 34 | 15 | 0.914 | 1 | 6 | ||
season | L | T. | GP | GA | GAA | W | L | OT | SO | S% | G | A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021-22 | NHL | Boston Bruins | 2 | 8 | 4.16 | 0 | 2 | 0 | 0 | 0.860 | 0 | 0 |
| 2022-23 | NHL | Boston Bruins | 6 | 20 | 3.33 | 3 | 3 | 0 | 0 | 0.896 | 0 | 1 |
| 2023-24 | NHL | Boston Bruins | 2 | 5 | 3.90 | 0 | 1 | 0 | 0 | 0.886 | 0 | 0 |
| 2024-25 | NHL | Ottawa Senators | 6 | 18 | 2.84 | 2 | 4 | 0 | 1 | 0.880 | 0 | 0 |
| 2025-26 | NHL | Ottawa Senators | 4 | 9 | 2.03 | 0 | 4 | 0 | 0 | 0.932 | 0 | 0 |
| NHL Total | 20 | 60 | 3.00 | 5 | 14 | 0 | 1 | 0.896 | 0 | 1 | ||