

| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 2009-10 | USHL | Omaha | 56 | 28 | 44 | 72 | 59 | 0 | 8 | 2 | 9 | 11 | 2 | 0 |
| 2010-11 | WCHA | U. of Minnesota | 34 | 6 | 18 | 24 | 22 | 0 | -- | -- | -- | -- | -- | -- |
| 2011-12 | WCHA | U. of Minnesota | 43 | 20 | 29 | 49 | 30 | 0 | -- | -- | -- | -- | -- | -- |
| 2012-13 | WCHA | U. of Minnesota | 37 | 16 | 35 | 51 | 14 | 0 | -- | -- | -- | -- | -- | -- |
| 2012-13 | AHL | Houston | 6 | 0 | 2 | 2 | 2 | 1 | 5 | 1 | 1 | 2 | 4 | -4 |
| 2013-14 | AHL | Iowa Wild | 31 | 14 | 13 | 27 | 14 | 2 | -- | -- | -- | -- | -- | -- |
| 2013-14 | NHL | Minnesota Wild | 46 | 6 | 9 | 15 | 29 | 14 | 13 | 4 | 3 | 7 | 0 | 2 |
| 2014-15 | NHL | Minnesota Wild | 72 | 7 | 7 | 14 | 32 | -7 | 2 | 1 | 0 | 1 | 0 | 1 |
| 2015-16 | NHL | Minnesota Wild | 76 | 14 | 20 | 34 | 24 | 21 | 5 | 1 | 3 | 4 | 2 | 0 |
| 2016-17 | NHL | Minnesota Wild | 72 | 15 | 11 | 26 | 28 | 5 | 4 | 0 | 1 | 1 | 0 | -2 |
| 2017-18 | NHL | Vegas Golden Knights | 76 | 29 | 26 | 55 | 37 | -16 | 20 | 3 | 6 | 9 | 27 | -3 |
| 2018-19 | NHL | Vegas Golden Knights | 15 | 2 | 5 | 7 | 10 | 1 | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | Carolina Hurricanes | 41 | 12 | 10 | 22 | 20 | 1 | -- | -- | -- | -- | -- | -- |
| 2019-20 | NHL | Florida Panthers | 7 | 0 | 2 | 2 | 2 | 0 | 4 | 1 | 0 | 1 | 0 | -3 |
| 2020-21 | NHL | Nashville Predators | 51 | 9 | 12 | 21 | 14 | 4 | 6 | 1 | 3 | 4 | 4 | -3 |
| 2021-22 | NHL | Boston Bruins | 78 | 18 | 26 | 44 | 47 | 19 | 7 | 1 | 2 | 3 | 8 | -4 |
| 2022-23 | NHL | New Jersey Devils | 80 | 14 | 27 | 41 | 47 | 13 | 12 | 4 | 2 | 6 | 15 | -6 |
| 2023-24 | NHL | New Jersey Devils | 76 | 16 | 19 | 35 | 54 | -1 | -- | -- | -- | -- | -- | -- |
| 2024-25 | NHL | New Jersey Devils | 69 | 11 | 10 | 21 | 39 | -6 | 5 | 0 | 1 | 1 | 2 | -1 |
| 2025-26 | NHL | Nashville Predators | 65 | 10 | 21 | 31 | 44 | -17 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 824 | 163 | 205 | 368 | 427 | 31 | 78 | 16 | 21 | 37 | 58 | -19 | ||
| Year | Tournament | Team | GP | G | A | Pts | PIM | +/- |
|---|---|---|---|---|---|---|---|---|
| 2011 | World Junior U-20 Championships | Team Finland | 6 | 4 | 3 | 7 | 10 | 2 |
| 2014 | IIHF World Championship | Team Finland | 6 | 0 | 1 | 1 | 2 | -2 |
| 2017 | World Cup of Hockey | Team Finland | 1 | 0 | 0 | 0 | 0 | -1 |
| 2025 | Four Nations Face-off | Team Finland | 3 | 0 | 0 | 0 | 0 | -2 |
| 2026 | Olympics | Team Finland | 6 | 3 | 3 | 6 | 6 | 4 |