
| 2008-09 | High-MA | Thayer | 26 | 20 | 28 | 48 | - | - | - | 4 |
| 2009-10 | EJHL | South Shore | 42 | 21 | 42 | 63 | - | - | - | 50 |
| 2009-10 | U-18 | USNTDP | 4 | 1 | 0 | 1 | - | - | - | 2 |
| 2010-11 | H-East | Boston University | 37 | 7 | 19 | 26 | - | - | - | 34 |
| 2011-12 | H-East | Boston University | 16 | 3 | 11 | 14 | - | - | - | 20 |
| 2011-12 | QMJHL | Saint John | 23 | 15 | 23 | 38 | 23 | 80 | 18.8% | 8 |
| 2012-13 | NHL | Minnesota Wild | 37 | 8 | 6 | 14 | 3 | 50 | 16.0% | 28 |
| 2012-13 | AHL | Houston | 47 | 14 | 11 | 25 | -8 | 70 | 20.0% | 22 |
| 2013-14 | NHL | Minnesota Wild | 70 | 12 | 18 | 30 | -7 | 135 | 8.9% | 33 |
| 2014-15 | NHL | Minnesota Wild | 82 | 11 | 24 | 35 | 13 | 120 | 9.2% | 39 |
| 2015-16 | NHL | Minnesota Wild | 82 | 21 | 21 | 42 | 1 | 140 | 15.0% | 16 |
| 2016-17 | NHL | Minnesota Wild | 82 | 18 | 38 | 56 | 13 | 159 | 11.3% | 36 |
| 2017-18 | NHL | Minnesota Wild | 66 | 11 | 26 | 37 | 8 | 117 | 9.4% | 18 |
| 2018-19 | NHL | Minnesota Wild | 60 | 10 | 18 | 28 | 1 | 113 | 8.9% | 16 |
| 2018-19 | NHL | Boston Bruins | 21 | 2 | 4 | 6 | -2 | 42 | 4.8% | 4 |
| 2019-20 | NHL | Boston Bruins | 70 | 16 | 21 | 37 | 9 | 145 | 11.0% | 21 |
| 2020-21 | NHL | Boston Bruins | 51 | 6 | 10 | 16 | -4 | 79 | 7.6% | 20 |
| 2021-22 | NHL | Boston Bruins | 82 | 16 | 28 | 44 | -6 | 131 | 12.2% | 32 |
| 2022-23 | NHL | Boston Bruins | 82 | 16 | 29 | 45 | 29 | 139 | 11.5% | 30 |
| 2023-24 | NHL | Boston Bruins | 82 | 25 | 35 | 60 | -2 | 147 | 17.0% | 38 |
| 2024-25 | NHL | Boston Bruins | 64 | 15 | 7 | 22 | -14 | 92 | 16.3% | 18 |
| 2024-25 | NHL | Colorado Avalanche | 19 | 2 | 11 | 13 | 5 | 23 | 8.7% | 6 |
| 2025-26 | NHL | Columbus Blue Jackets | 43 | 6 | 19 | 25 | -4 | 58 | 10.3% | 6 |
| NHL Totals | – | 993 | 195 | 315 | 510 | 43 | 1690 | 11.5% | 361 | |
| AHL Totals | – | 47 | 14 | 11 | 25 | -8 | 70 | 20.0% | 22 | |
| Juniors Totals | – | 23 | 15 | 23 | 38 | 23 | 80 | 18.8% | 8 | |
| 2009-10 | EJHL | South Shore | 4 | 2 | 1 | 3 | - | - | - | 0 |
| 2011-12 | QMJHL | Saint John | 17 | 15 | 19 | 34 | 27 | 67 | 22.4% | 8 |
| 2011-12 | M-Cup | Saint John | 4 | 0 | 4 | 4 | 4 | 9 | 0.0% | 2 |
| 2012-13 | NHL | Minnesota Wild | 5 | 0 | 2 | 2 | -4 | 11 | 0.0% | 2 |
| 2013-14 | NHL | Minnesota Wild | 13 | 3 | 4 | 7 | -2 | 23 | 13.0% | 6 |
| 2014-15 | NHL | Minnesota Wild | 10 | 1 | 1 | 2 | -3 | 14 | 7.1% | 0 |
| 2015-16 | NHL | Minnesota Wild | 6 | 1 | 1 | 2 | -4 | 13 | 7.7% | 6 |
| 2016-17 | NHL | Minnesota Wild | 5 | 2 | 0 | 2 | -1 | 14 | 14.3% | 2 |
| 2017-18 | NHL | Minnesota Wild | 5 | 0 | 0 | 0 | -3 | 10 | 0.0% | 2 |
| 2018-19 | NHL | Boston Bruins | 24 | 9 | 7 | 16 | 8 | 39 | 23.1% | 12 |
| 2019-20 | NHL | Boston Bruins | 13 | 3 | 2 | 5 | -4 | 31 | 9.7% | 2 |
| 2020-21 | NHL | Boston Bruins | 11 | 2 | 1 | 3 | -8 | 16 | 12.5% | 6 |
| 2021-22 | NHL | Boston Bruins | 7 | 2 | 4 | 6 | -7 | 10 | 20.0% | 2 |
| 2022-23 | NHL | Boston Bruins | 7 | 1 | 1 | 2 | -1 | 15 | 6.7% | 4 |
| 2023-24 | NHL | Boston Bruins | 13 | 1 | 4 | 5 | 0 | 20 | 5.0% | 12 |
| 2024-25 | NHL | Colorado Avalanche | 7 | 1 | 0 | 1 | -4 | 7 | 14.3% | 2 |
| NHL Totals | – | 126 | 26 | 27 | 53 | -33 | 223 | 11.7% | 58 | |
| Juniors Totals | – | 17 | 15 | 19 | 34 | 27 | 67 | 22.4% | 8 | |
| Season | Opponent | Date | G | A | P | +/- | PIM | PPG | SHG | S | Shifts | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular | @ VGK | Jan 8 | 0 | 0 | 0 | -1 | 0 | 0 | 0 | 1 | 17 | 17:17 |
| Regular | @ SJS | Jan 6 | 0 | 0 | 0 | -3 | 0 | 0 | 0 | 1 | 24 | 17:24 |
| Regular | vs PIT | Jan 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 22:08 |
| Regular | vs BUF | Jan 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 4 | 19 | 14:49 |
| Regular | vs NJD | Dec 31 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 3 | 24 | 17:51 |