Statistics
Regular Season Stats
| 2008-09 | Minor-ON | Peterborough | 57 | 24 | 48 | 72 | - | - | - | 26 |
| 2009-10 | OHL | Ottawa | 64 | 4 | 8 | 12 | 3 | - | - | 12 |
| 2010-11 | OHL | Ottawa | 68 | 9 | 25 | 34 | 11 | - | - | 28 |
| 2011-12 | OHL | Ottawa | 64 | 17 | 43 | 60 | 21 | - | - | 14 |
| 2012-13 | OHL | Ottawa | 42 | 11 | 29 | 40 | -14 | - | - | 10 |
| 2012-13 | OHL | Owen Sound | 27 | 8 | 16 | 24 | 6 | - | - | 2 |
| 2012-13 | AHL | Binghamton | 3 | 1 | 1 | 2 | 2 | 6 | 16.7% | 0 |
| 2013-14 | NHL | Ottawa Senators | 49 | 3 | 6 | 9 | -5 | 82 | 3.7% | 14 |
| 2013-14 | AHL | Binghamton | 27 | 2 | 17 | 19 | 11 | 64 | 3.1% | 10 |
| 2014-15 | NHL | Ottawa Senators | 81 | 5 | 16 | 21 | -4 | 130 | 3.9% | 6 |
| 2015-16 | NHL | Ottawa Senators | 75 | 10 | 16 | 26 | 9 | 116 | 8.6% | 18 |
| 2016-17 | NHL | Ottawa Senators | 79 | 2 | 15 | 17 | -11 | 143 | 1.4% | 20 |
| 2017-18 | NHL | Ottawa Senators | 82 | 5 | 14 | 19 | -27 | 143 | 3.5% | 12 |
| 2018-19 | NHL | Ottawa Senators | 74 | 7 | 19 | 26 | -22 | 132 | 5.3% | 18 |
| 2019-20 | NHL | Toronto Maple Leafs | 56 | 1 | 7 | 8 | 7 | 48 | 2.1% | 20 |
| 2020-21 | NHL | Pittsburgh Penguins | 53 | 4 | 13 | 17 | 18 | 58 | 6.9% | 10 |
| 2021-22 | NHL | Edmonton Oilers | 78 | 5 | 23 | 28 | 8 | 102 | 4.9% | 14 |
| 2022-23 | NHL | Edmonton Oilers | 80 | 1 | 14 | 15 | 11 | 88 | 1.1% | 24 |
| 2023-24 | NHL | Edmonton Oilers | 79 | 5 | 20 | 25 | 12 | 97 | 5.2% | 14 |
| 2024-25 | NHL | San Jose Sharks | 54 | 4 | 11 | 15 | -9 | 60 | 6.7% | 14 |
| 2024-25 | NHL | Dallas Stars | 31 | 0 | 9 | 9 | 15 | 30 | 0.0% | 10 |
| 2025-26 | NHL | Los Angeles Kings | 42 | 1 | 7 | 8 | 1 | 34 | 2.9% | 8 |
| NHL Totals | – | 913 | 53 | 190 | 243 | 3 | 1263 | 4.2% | 202 | |
| AHL Totals | – | 30 | 3 | 18 | 21 | 13 | 70 | 4.3% | 10 | |
| Juniors Totals | – | 265 | 49 | 121 | 170 | 27 | - | - | 66 | |
Playoff Stats
| 2008-09 | ETAHL U16 | Peterborough Petes U16 AAA | 4 | 0 | 1 | 1 | - | - | - | 2 |
| 2009-10 | OHL | Ottawa | 12 | 0 | 3 | 3 | 1 | - | - | 0 |
| 2010-11 | OHL | Ottawa | 4 | 0 | 2 | 2 | -5 | - | - | 4 |
| 2011-12 | OHL | Ottawa | 18 | 2 | 13 | 15 | 1 | - | - | 4 |
| 2012-13 | OHL | Owen Sound | 12 | 1 | 9 | 10 | -8 | - | - | 0 |
| 2012-13 | AHL | Binghamton | 3 | 0 | 0 | 0 | -1 | 5 | 0.0% | 0 |
| 2013-14 | AHL | Binghamton | 4 | 1 | 1 | 2 | -5 | 7 | 14.3% | 0 |
| 2014-15 | NHL | Ottawa Senators | 6 | 0 | 2 | 2 | 0 | 5 | 0.0% | 0 |
| 2016-17 | NHL | Ottawa Senators | 19 | 0 | 1 | 1 | -7 | 23 | 0.0% | 2 |
| 2019-20 | NHL | Toronto Maple Leafs | 5 | 1 | 0 | 1 | 0 | 5 | 20.0% | 4 |
| 2020-21 | NHL | Pittsburgh Penguins | 6 | 0 | 2 | 2 | -3 | 13 | 0.0% | 0 |
| 2021-22 | NHL | Edmonton Oilers | 16 | 1 | 6 | 7 | 4 | 23 | 4.3% | 12 |
| 2022-23 | NHL | Edmonton Oilers | 12 | 0 | 1 | 1 | -5 | 14 | 0.0% | 2 |
| 2023-24 | NHL | Edmonton Oilers | 24 | 2 | 3 | 5 | -5 | 24 | 8.3% | 0 |
| 2024-25 | NHL | Dallas Stars | 18 | 0 | 3 | 3 | -6 | 19 | 0.0% | 2 |
| NHL Totals | – | 106 | 4 | 18 | 22 | -22 | 126 | 3.2% | 22 | |
| AHL Totals | – | 7 | 1 | 1 | 2 | -6 | 12 | 8.3% | 0 | |
| Juniors Totals | – | 46 | 3 | 27 | 30 | -11 | - | - | 8 | |
Last 5 Games
| Season | Opponent | Date | G | A | P | +/- | PIM | PPG | SHG | S | Shifts | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Regular | vs SJS | Jan 7 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 16 | 15:00 |
| Regular | vs MIN | Jan 5 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 22 | 17:17 |
| Regular | vs MIN | Jan 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 20 | 19:14 |
| Regular | vs TBL | Jan 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 20 | 15:45 |
| Regular | @ COL | Dec 29 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19 | 17:01 |