
| 2008-09 | QAAA | Trois-Rivieres | 44 | 8 | 19 | 27 | - | - | - | 39 |
| 2009-10 | QMJHL | Victoriaville | 61 | 10 | 18 | 28 | 19 | - | - | 54 |
| 2010-11 | QMJHL | Victoriaville | 64 | 23 | 44 | 67 | 17 | 158 | 14.6% | 59 |
| 2011-12 | QMJHL | Victoriaville | 62 | 18 | 53 | 71 | 11 | - | - | 61 |
| 2011-12 | AHL | Rockford | 7 | 0 | 2 | 2 | -5 | 12 | 0.0% | 10 |
| 2012-13 | QMJHL | Victoriaville | 29 | 14 | 30 | 44 | -1 | 106 | 13.2% | 28 |
| 2012-13 | QMJHL | Moncton | 27 | 9 | 32 | 41 | 17 | 123 | 7.3% | 22 |
| 2012-13 | AHL | Rockford | 5 | 0 | 0 | 0 | -1 | 5 | 0.0% | 2 |
| 2013-14 | AHL | Rockford | 72 | 6 | 20 | 26 | 11 | 130 | 4.6% | 40 |
| 2014-15 | NHL | Chicago Blackhawks | 2 | 0 | 0 | 0 | 0 | 2 | 0.0% | 0 |
| 2014-15 | AHL | Rockford | 70 | 13 | 25 | 38 | 20 | 157 | 8.3% | 38 |
| 2015-16 | NHL | Chicago Blackhawks | 30 | 1 | 4 | 5 | -3 | 48 | 2.1% | 6 |
| 2015-16 | NHL | Montréal Canadiens | 21 | 3 | 2 | 5 | -2 | 24 | 12.5% | 8 |
| 2015-16 | AHL | Rockford | 6 | 1 | 1 | 2 | -2 | 17 | 5.9% | 4 |
| 2016-17 | NHL | Montréal Canadiens | 82 | 13 | 27 | 40 | 5 | 133 | 9.8% | 35 |
| 2017-18 | NHL | Montréal Canadiens | 52 | 8 | 17 | 25 | 0 | 94 | 8.5% | 34 |
| 2018-19 | NHL | Montréal Canadiens | 81 | 12 | 41 | 53 | 17 | 132 | 9.1% | 39 |
| 2019-20 | NHL | Montréal Canadiens | 71 | 13 | 34 | 47 | 18 | 131 | 9.9% | 32 |
| 2020-21 | NHL | Montréal Canadiens | 53 | 5 | 19 | 24 | 9 | 73 | 6.8% | 24 |
| 2021-22 | NHL | Los Angeles Kings | 79 | 27 | 24 | 51 | 14 | 194 | 13.9% | 38 |
| 2022-23 | NHL | Los Angeles Kings | 82 | 18 | 36 | 54 | -8 | 152 | 11.8% | 63 |
| 2023-24 | NHL | Los Angeles Kings | 78 | 17 | 30 | 47 | 12 | 159 | 10.7% | 18 |
| 2024-25 | NHL | Los Angeles Kings | 80 | 8 | 35 | 43 | 20 | 123 | 6.5% | 26 |
| 2025-26 | NHL | Los Angeles Kings | 30 | 0 | 5 | 5 | 3 | 42 | 0.0% | 6 |
| 2025-26 | NHL | Montréal Canadiens | 21 | 3 | 6 | 9 | -3 | 31 | 9.7% | 14 |
| NHL Totals | – | 762 | 128 | 280 | 408 | 82 | 1338 | 9.6% | 343 | |
| AHL Totals | – | 160 | 20 | 48 | 68 | 23 | 321 | 6.2% | 94 | |
| Juniors Totals | – | 243 | 74 | 177 | 251 | 63 | 387 | 19.1% | 224 | |
| 2008-09 | QAAA | Trois-Rivieres | 19 | 4 | 11 | 15 | - | - | - | 8 |
| 2009-10 | QMJHL | Victoriaville | 16 | 0 | 1 | 1 | -2 | - | - | 8 |
| 2010-11 | QMJHL | Victoriaville | 9 | 5 | 10 | 15 | 4 | - | - | 6 |
| 2011-12 | QMJHL | Victoriaville | 4 | 0 | 3 | 3 | -1 | - | - | 4 |
| 2012-13 | QMJHL | Moncton | 4 | 1 | 3 | 4 | -1 | 15 | 6.7% | 0 |
| 2014-15 | AHL | Rockford | 8 | 3 | 2 | 5 | 8 | 14 | 21.4% | 20 |
| 2016-17 | NHL | Montréal Canadiens | 6 | 0 | 2 | 2 | 1 | 10 | 0.0% | 2 |
| 2019-20 | NHL | Montréal Canadiens | 10 | 1 | 2 | 3 | -1 | 24 | 4.2% | 6 |
| 2020-21 | NHL | Montréal Canadiens | 22 | 1 | 3 | 4 | -1 | 39 | 2.6% | 6 |
| 2021-22 | NHL | Los Angeles Kings | 7 | 3 | 2 | 5 | 6 | 11 | 27.3% | 2 |
| 2022-23 | NHL | Los Angeles Kings | 6 | 2 | 3 | 5 | 1 | 17 | 11.8% | 12 |
| 2023-24 | NHL | Los Angeles Kings | 5 | 0 | 1 | 1 | 0 | 9 | 0.0% | 4 |
| 2024-25 | NHL | Los Angeles Kings | 6 | 2 | 6 | 8 | 2 | 9 | 22.2% | 0 |
| NHL Totals | – | 62 | 9 | 19 | 28 | 8 | 119 | 7.6% | 32 | |
| AHL Totals | – | 8 | 3 | 2 | 5 | 8 | 14 | 21.4% | 20 | |
| Juniors Totals | – | 33 | 6 | 17 | 23 | 0 | 15 | 40.0% | 18 | |
| Season | Opponent | Date | G | A | P | +/- | PIM | PPG | SHG | S | Shifts | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular | @ WPG | Feb 4 | 1 | 0 | 1 | 2 | 0 | 0 | 1 | 3 | 17 | 15:18 |
| Regular | @ MIN | Feb 2 | 0 | 1 | 1 | 1 | 2 | 0 | 0 | 2 | 23 | 16:26 |
| Regular | @ BUF | Jan 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 22 | 18:13 |
| Regular | vs COL | Jan 29 | 0 | 0 | 0 | -2 | 0 | 0 | 0 | 0 | 19 | 14:50 |
| Regular | vs VGK | Jan 27 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 3 | 20 | 15:12 |