Statistics
Regular Season Stats
| 2010-11 | GTHL | Don Mills | 30 | 27 | 30 | 57 | - | - | - | 45 |
| 2010-11 | ON-Jr.A | St. Michael's | 2 | 1 | 1 | 2 | - | - | - | 0 |
| 2011-12 | OHL | London | 62 | 21 | 28 | 49 | 13 | - | - | 48 |
| 2012-13 | OHL | London | 64 | 39 | 48 | 87 | 33 | - | - | 71 |
| 2013-14 | OHL | London | 61 | 34 | 59 | 93 | 24 | - | - | 90 |
| 2014-15 | OHL | London | 57 | 32 | 70 | 102 | 24 | - | - | 66 |
| 2015-16 | NHL | Arizona Coyotes | 81 | 18 | 34 | 52 | 3 | 156 | 11.5% | 72 |
| 2016-17 | NHL | Arizona Coyotes | 59 | 9 | 29 | 38 | -9 | 108 | 8.3% | 40 |
| 2017-18 | NHL | Arizona Coyotes | 82 | 9 | 36 | 45 | -7 | 150 | 6.0% | 73 |
| 2018-19 | NHL | Montréal Canadiens | 82 | 28 | 44 | 72 | 20 | 203 | 13.8% | 80 |
| 2019-20 | NHL | Montréal Canadiens | 71 | 17 | 27 | 44 | -3 | 179 | 9.5% | 35 |
| 2020-21 | NHL | Columbus Blue Jackets | 54 | 9 | 15 | 24 | -18 | 99 | 9.1% | 75 |
| 2021-22 | NHL | Columbus Blue Jackets | 53 | 9 | 23 | 32 | 2 | 77 | 11.7% | 37 |
| 2021-22 | NHL | Carolina Hurricanes | 19 | 2 | 5 | 7 | 8 | 27 | 7.4% | 18 |
| 2022-23 | NHL | Chicago Blackhawks | 60 | 18 | 31 | 49 | -9 | 143 | 12.6% | 76 |
| 2022-23 | NHL | Dallas Stars | 20 | 2 | 5 | 7 | -6 | 36 | 5.6% | 6 |
| 2023-24 | NHL | Toronto Maple Leafs | 80 | 9 | 38 | 47 | 10 | 137 | 6.6% | 118 |
| 2024-25 | NHL | Toronto Maple Leafs | 74 | 8 | 25 | 33 | 5 | 93 | 8.6% | 76 |
| 2025-26 | NHL | Toronto Maple Leafs | 42 | 5 | 15 | 20 | -12 | 64 | 7.8% | 32 |
| NHL Totals | – | 777 | 143 | 327 | 470 | -16 | 1472 | 9.7% | 738 | |
| Juniors Totals | – | 244 | 126 | 205 | 331 | 94 | - | - | 275 | |
Playoff Stats
| 2011-12 | OHL | London | 19 | 4 | 5 | 9 | 4 | - | - | 10 |
| 2011-12 | M-Cup | London | 4 | 1 | 2 | 3 | 0 | 4 | 25.0% | 8 |
| 2012-13 | OHL | London | 21 | 11 | 21 | 32 | 12 | - | - | 26 |
| 2012-13 | M-Cup | London | 5 | 1 | 2 | 3 | -9 | - | - | 6 |
| 2013-14 | OHL | London | 9 | 4 | 6 | 10 | -5 | - | - | 8 |
| 2013-14 | M-Cup | London | 3 | 0 | 2 | 2 | 1 | - | - | 2 |
| 2014-15 | OHL | London | 9 | 5 | 4 | 9 | 0 | - | - | 16 |
| 2019-20 | NHL | Montréal Canadiens | 10 | 0 | 3 | 3 | -2 | 14 | 0.0% | 8 |
| 2021-22 | NHL | Carolina Hurricanes | 14 | 3 | 3 | 6 | 6 | 21 | 14.3% | 4 |
| 2022-23 | NHL | Dallas Stars | 19 | 3 | 10 | 13 | -3 | 34 | 8.8% | 52 |
| 2023-24 | NHL | Toronto Maple Leafs | 7 | 1 | 3 | 4 | 1 | 17 | 5.9% | 6 |
| 2024-25 | NHL | Toronto Maple Leafs | 13 | 3 | 4 | 7 | 2 | 19 | 15.8% | 33 |
| NHL Totals | – | 63 | 10 | 23 | 33 | 4 | 105 | 9.5% | 103 | |
| Juniors Totals | – | 58 | 24 | 36 | 60 | 11 | - | - | 60 | |
Last 5 Games
| Season | Opponent | Date | G | A | P | +/- | PIM | PPG | SHG | S | Shifts | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular | vs VAN | Jan 10 | 1 | 0 | 1 | 1 | 5 | 0 | 0 | 2 | 15 | 10:51 |
| Regular | @ PHI | Jan 8 | 0 | 0 | 0 | -1 | 0 | 0 | 0 | 2 | 20 | 15:32 |
| Regular | vs FLA | Jan 6 | 0 | 0 | 0 | -1 | 5 | 0 | 0 | 0 | 19 | 14:25 |
| Regular | @ NYI | Jan 3 | 0 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 28 | 17:21 |
| Regular | vs WPG | Jan 1 | 0 | 1 | 1 | 2 | 2 | 0 | 0 | 3 | 20 | 17:15 |