

| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 2009-10 | OHL | Ottawa 67's | 64 | 4 | 8 | 12 | 12 | 3 | 12 | 0 | 3 | 3 | 0 | 1 |
| 2010-11 | OHL | Ottawa 67's | 68 | 9 | 25 | 34 | 28 | 11 | 4 | 0 | 2 | 2 | 4 | -5 |
| 2011-12 | OHL | Ottawa 67's | 64 | 17 | 43 | 60 | 14 | 21 | 18 | 2 | 13 | 15 | 4 | 1 |
| 2012-13 | OHL | Ottawa 67's | 42 | 11 | 29 | 40 | 10 | -14 | -- | -- | -- | -- | -- | -- |
| 2012-13 | OHL | Owen Sound Attack | 27 | 8 | 16 | 24 | 2 | 6 | 12 | 1 | 9 | 10 | 0 | -8 |
| 2012-13 | AHL | Binghamton | 3 | 1 | 1 | 2 | 0 | 2 | 3 | 0 | 0 | 0 | 0 | -1 |
| 2013-14 | AHL | Binghamton | 27 | 2 | 17 | 19 | 10 | 11 | 4 | 1 | 1 | 2 | 0 | -5 |
| 2013-14 | NHL | Ottawa Senators | 49 | 3 | 6 | 9 | 14 | -5 | -- | -- | -- | -- | -- | -- |
| 2014-15 | NHL | Ottawa Senators | 81 | 5 | 16 | 21 | 6 | -4 | 6 | 0 | 2 | 2 | 0 | 0 |
| 2015-16 | NHL | Ottawa Senators | 75 | 10 | 16 | 26 | 18 | 9 | -- | -- | -- | -- | -- | -- |
| 2016-17 | NHL | Ottawa Senators | 79 | 2 | 15 | 17 | 20 | -11 | 19 | 0 | 1 | 1 | 2 | -7 |
| 2017-18 | NHL | Ottawa Senators | 82 | 5 | 14 | 19 | 12 | -27 | -- | -- | -- | -- | -- | -- |
| 2018-19 | NHL | Ottawa Senators | 74 | 7 | 19 | 26 | 18 | -22 | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | Toronto Maple Leafs | 56 | 1 | 7 | 8 | 20 | 7 | 5 | 1 | 0 | 1 | 4 | 0 |
| 2020-21 | NHL | Pittsburgh Penguins | 53 | 4 | 13 | 17 | 10 | 18 | 6 | 0 | 2 | 2 | 0 | -3 |
| 2021-22 | NHL | Edmonton Oilers | 78 | 5 | 23 | 28 | 14 | 8 | 16 | 1 | 6 | 7 | 12 | 4 |
| 2022-23 | NHL | Edmonton Oilers | 80 | 1 | 14 | 15 | 24 | 11 | 12 | 0 | 1 | 1 | 2 | -5 |
| 2023-24 | NHL | Edmonton Oilers | 79 | 5 | 20 | 25 | 14 | 12 | 24 | 2 | 3 | 5 | 0 | -5 |
| 2024-25 | NHL | San Jose Sharks | 54 | 4 | 11 | 15 | 14 | -9 | -- | -- | -- | -- | -- | -- |
| 2024-25 | NHL | Dallas Stars | 31 | 0 | 9 | 9 | 10 | 15 | 18 | 0 | 3 | 3 | 2 | -6 |
| 2025-26 | NHL | Los Angeles Kings | 66 | 1 | 7 | 8 | 12 | -5 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 937 | 53 | 190 | 243 | 206 | -3 | 106 | 4 | 18 | 22 | 22 | -22 | ||
| Year | Tournament | Team | GP | G | A | Pts | PIM | +/- |
|---|---|---|---|---|---|---|---|---|
| 2016 | IIHF World Championship | Team Canada | 10 | 1 | 5 | 6 | 0 | 8 |