

| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 2011-12 | QMJHL | Saint John Sea Dogs | 23 | 15 | 23 | 38 | 8 | 23 | 17 | 15 | 19 | 34 | 8 | 27 |
| 2012-13 | AHL | Houston | 47 | 14 | 11 | 25 | 22 | -8 | -- | -- | -- | -- | -- | -- |
| 2012-13 | NHL | Minnesota Wild | 37 | 8 | 6 | 14 | 28 | 3 | 5 | 0 | 2 | 2 | 2 | -4 |
| 2013-14 | NHL | Minnesota Wild | 70 | 12 | 18 | 30 | 33 | -7 | 13 | 3 | 4 | 7 | 6 | -2 |
| 2014-15 | NHL | Minnesota Wild | 82 | 11 | 24 | 35 | 39 | 13 | 10 | 1 | 1 | 2 | 0 | -3 |
| 2015-16 | NHL | Minnesota Wild | 82 | 21 | 21 | 42 | 16 | 1 | 6 | 1 | 1 | 2 | 6 | -4 |
| 2016-17 | NHL | Minnesota Wild | 82 | 18 | 38 | 56 | 36 | 13 | 5 | 2 | 0 | 2 | 2 | -1 |
| 2017-18 | NHL | Minnesota Wild | 66 | 11 | 26 | 37 | 18 | 8 | 5 | 0 | 0 | 0 | 2 | -3 |
| 2018-19 | NHL | Minnesota Wild | 60 | 10 | 18 | 28 | 16 | 1 | -- | -- | -- | -- | -- | -- |
| 2018-19 | NHL | Boston Bruins | 21 | 2 | 4 | 6 | 4 | -2 | 24 | 9 | 7 | 16 | 12 | 8 |
| 2019-20 | NHL | Boston Bruins | 70 | 16 | 21 | 37 | 21 | 9 | 13 | 3 | 2 | 5 | 2 | -4 |
| 2020-21 | NHL | Boston Bruins | 51 | 6 | 10 | 16 | 20 | -4 | 11 | 2 | 1 | 3 | 6 | -8 |
| 2021-22 | NHL | Boston Bruins | 82 | 16 | 28 | 44 | 32 | -6 | 7 | 2 | 4 | 6 | 2 | -7 |
| 2022-23 | NHL | Boston Bruins | 82 | 16 | 29 | 45 | 30 | 29 | 7 | 1 | 1 | 2 | 4 | -1 |
| 2023-24 | NHL | Boston Bruins | 82 | 25 | 35 | 60 | 38 | -2 | 13 | 1 | 4 | 5 | 12 | 0 |
| 2024-25 | NHL | Boston Bruins | 64 | 15 | 7 | 22 | 18 | -14 | -- | -- | -- | -- | -- | -- |
| 2024-25 | NHL | Colorado Avalanche | 19 | 2 | 11 | 13 | 6 | 5 | 7 | 1 | 0 | 1 | 2 | -4 |
| 2025-26 | NHL | Columbus Blue Jackets | 66 | 16 | 35 | 51 | 10 | 8 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 1016 | 205 | 331 | 536 | 365 | 55 | 126 | 26 | 27 | 53 | 58 | -33 | ||
| Year | Tournament | Team | GP | G | A | Pts | PIM | +/- |
|---|---|---|---|---|---|---|---|---|
| 2011 | World Junior U-20 Championships | Team USA | 6 | 2 | 4 | 6 | 4 | 1 |
| 2012 | World Junior U-20 Championships | Team USA | 6 | 4 | 1 | 5 | 2 | 2 |
| 2012 | Memorial Cup | Saint John Sea Dogs | 4 | 0 | 4 | 4 | 2 | 4 |
| 2015 | IIHF World Championship | Team USA | 5 | 3 | 2 | 5 | 6 | 3 |