| Season | Team | League | GP | G | A | TP | PIM | Playoffs | GP | G | A | TP | PIM | |
| 2007-2008 | Phoenix Lemieux Academy | QC Int PW | - | - | - | - | - | | | ||||||
| 2011-2012 | Syracuse Jr. Stars | EmJHL | 40 | 44 | 57 | 101 | 26 | | | Playoffs | 4 | 1 | 3 | 4 | 4 |
| 2012-2013 | USNTDP Juniors | USHL | 38 | 4 | 6 | 10 | 24 | | | ||||||
| U.S. National U17 Team | NTDP | 56 | 11 | 15 | 26 | 32 | | | |||||||
| USA U17 | WHC-17 | 6 | 1 | 3 | 4 | 4 | | | |||||||
| 2013-2014 | USNTDP Juniors | USHL | 26 | 13 | 19 | 32 | 36 | | | ||||||
| U.S. National U18 Team | NTDP | 61 | 29 | 35 | 64 | 70 | | | |||||||
| USA U18 | WJC-18 | 7 | 0 | 3 | 3 | 14 | | | |||||||
| 2014-2015 | Boston College | NCAA | 37 | 14 | 14 | 28 | 28 | | | ||||||
| USA U20 | WJC-20 | 5 | 1 | 1 | 2 | 0 | | | |||||||
| 2015-2016 | Boston College | NCAA | 40 | 18 | 16 | 34 | 33 | | | ||||||
| 2016-2017 | Minnesota Wild | NHL | 6 | 0 | 0 | 0 | 0 | | | ||||||
| Iowa Wild | AHL | 57 | 18 | 19 | 37 | 28 | | | |||||||
| 2017-2018 | Vegas Golden Knights | NHL | 78 | 15 | 22 | 37 | 27 | | | Playoffs | 20 | 6 | 4 | 10 | 12 |
| Chicago Wolves | AHL | 3 | 4 | 1 | 5 | 0 | | | |||||||
| 2018-2019 | Vegas Golden Knights | NHL | 74 | 20 | 32 | 52 | 8 | | | Playoffs | 7 | 1 | 1 | 2 | 8 |
| 2019-2020 | Vegas Golden Knights | NHL | 42 | 8 | 9 | 17 | 8 | | | Playoffs | 20 | 8 | 4 | 12 | 8 |
| 2020-2021 | Vegas Golden Knights | NHL | 55 | 18 | 15 | 33 | 28 | | | Playoffs | 19 | 4 | 5 | 9 | 6 |
| 2021-2022 | Buffalo Sabres | NHL | 50 | 12 | 26 | 38 | 14 | | | ||||||
| 2022-2023 | Buffalo Sabres | NHL | 74 | 36 | 43 | 79 | 20 | | | ||||||
| USA | WC | 10 | 5 | 3 | 8 | 4 | | | |||||||
| 2023-2024 | Buffalo Sabres | NHL | 75 | 22 | 37 | 59 | 54 | | | ||||||
| 2024-2025 | Buffalo Sabres | NHL | 19 | 5 | 13 | 18 | 13 | | |