

| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 2012-13 | USHL | USNTDP | 38 | 4 | 6 | 10 | 24 | -14 | -- | -- | -- | -- | -- | -- |
| 2013-14 | USHL | USNTDP | 26 | 13 | 19 | 32 | 36 | 18 | -- | -- | -- | -- | -- | -- |
| 2016-17 | AHL | Iowa Wild | 57 | 18 | 19 | 37 | 28 | 10 | -- | -- | -- | -- | -- | -- |
| 2016-17 | NHL | Minnesota Wild | 6 | 0 | 0 | 0 | 0 | -3 | -- | -- | -- | -- | -- | -- |
| 2017-18 | AHL | Chicago Wolves | 3 | 4 | 1 | 5 | 0 | 2 | -- | -- | -- | -- | -- | -- |
| 2017-18 | NHL | Vegas Golden Knights | 78 | 15 | 22 | 37 | 27 | 3 | 20 | 6 | 4 | 10 | 12 | 0 |
| 2018-19 | NHL | Vegas Golden Knights | 74 | 20 | 32 | 52 | 8 | 13 | 7 | 1 | 1 | 2 | 8 | 0 |
| 2019-20 | NHL | Vegas Golden Knights | 42 | 8 | 9 | 17 | 8 | -10 | 20 | 8 | 4 | 12 | 8 | 5 |
| 2020-21 | NHL | Vegas Golden Knights | 55 | 18 | 15 | 33 | 28 | 16 | 19 | 4 | 5 | 9 | 6 | 6 |
| 2021-22 | NHL | Buffalo Sabres | 50 | 12 | 26 | 38 | 14 | -3 | -- | -- | -- | -- | -- | -- |
| 2022-23 | NHL | Buffalo Sabres | 74 | 36 | 43 | 79 | 20 | 14 | -- | -- | -- | -- | -- | -- |
| 2023-24 | NHL | Buffalo Sabres | 75 | 22 | 37 | 59 | 54 | 9 | -- | -- | -- | -- | -- | -- |
| 2024-25 | NHL | Buffalo Sabres | 82 | 36 | 31 | 67 | 47 | 16 | -- | -- | -- | -- | -- | -- |
| 2025-26 | NHL | Buffalo Sabres | 65 | 28 | 29 | 57 | 49 | 17 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 601 | 195 | 244 | 439 | 255 | 72 | 66 | 19 | 14 | 33 | 34 | 11 | ||
| Year | Tournament | Team | GP | G | A | Pts | PIM | +/- |
|---|---|---|---|---|---|---|---|---|
| 2015 | World Junior U-20 Championships | Team USA | 5 | 1 | 1 | 2 | 0 | -2 |
| 2023 | IIHF World Championship | Team USA | 10 | 5 | 3 | 8 | 4 | 11 |