
| 1971-72 | SJHL | Humboldt | - | - | - | - | - | - | - | - |
| 1972-73 | WCJHL | Swift Current | 67 | 16 | 29 | 45 | - | - | - | 10 |
| 1973-74 | WCJHL | Swift Current | 68 | 41 | 71 | 112 | - | - | - | 76 |
| 1974-75 | WCJHL | Lethbridge | 67 | 46 | 98 | 144 | - | - | - | 103 |
| 1975-76 | NHL | New York Islanders | 80 | 32 | 63 | 95 | 27 | 178 | 18.0% | 21 |
| 1976-77 | NHL | New York Islanders | 76 | 30 | 42 | 72 | 28 | 175 | 17.1% | 34 |
| 1977-78 | NHL | New York Islanders | 77 | 46 | 77 | 123 | 52 | 193 | 23.8% | 46 |
| 1978-79 | NHL | New York Islanders | 76 | 47 | 87 | 134 | 76 | 187 | 25.1% | 50 |
| 1978-79 | Ch-Cup | NHL All-Stars | 3 | 1 | 1 | 2 | - | - | - | 2 |
| 1979-80 | NHL | New York Islanders | 78 | 42 | 62 | 104 | 31 | 186 | 22.6% | 68 |
| 1980-81 | NHL | New York Islanders | 73 | 31 | 72 | 103 | 50 | 156 | 19.9% | 74 |
| 1981-82 | NHL | New York Islanders | 80 | 50 | 79 | 129 | 70 | 217 | 23.0% | 88 |
| 1982-83 | NHL | New York Islanders | 80 | 34 | 55 | 89 | 36 | 179 | 19.0% | 68 |
| 1983-84 | NHL | New York Islanders | 68 | 40 | 71 | 111 | 68 | 194 | 20.6% | 59 |
| 1984-85 | NHL | New York Islanders | 68 | 28 | 31 | 59 | 3 | 158 | 17.7% | 47 |
| 1985-86 | NHL | New York Islanders | 78 | 37 | 59 | 96 | 30 | 185 | 20.0% | 72 |
| 1986-87 | NHL | New York Islanders | 80 | 23 | 64 | 87 | 4 | 195 | 11.8% | 50 |
| 1987-88 | NHL | New York Islanders | 77 | 30 | 52 | 82 | 10 | 176 | 17.1% | 48 |
| 1988-89 | NHL | New York Islanders | 73 | 17 | 28 | 45 | -7 | 163 | 10.4% | 44 |
| 1989-90 | NHL | New York Islanders | 59 | 13 | 11 | 24 | -11 | 84 | 15.5% | 29 |
| 1990-91 | NHL | Pittsburgh Penguins | 52 | 9 | 19 | 28 | 5 | 68 | 13.2% | 24 |
| 1991-92 | NHL | Pittsburgh Penguins | 63 | 11 | 18 | 29 | -11 | 102 | 10.8% | 54 |
| 1993-94 | NHL | Pittsburgh Penguins | 41 | 4 | 11 | 15 | -12 | 45 | 8.9% | 36 |
| NHL Totals | – | 1279 | 524 | 901 | 1425 | 449 | 2841 | 18.4% | 912 | |
| 1973-74 | WCJHL | Swift Current | 13 | 7 | 8 | 15 | - | - | - | 8 |
| 1974-75 | WCJHL | Lethbridge | 6 | 2 | 5 | 7 | - | - | - | 14 |
| 1975-76 | NHL | New York Islanders | 13 | 1 | 7 | 8 | -2 | 27 | 3.7% | 8 |
| 1976-77 | NHL | New York Islanders | 12 | 2 | 8 | 10 | 4 | 26 | 7.7% | 2 |
| 1977-78 | NHL | New York Islanders | 7 | 0 | 3 | 3 | 0 | 18 | 0.0% | 4 |
| 1978-79 | NHL | New York Islanders | 10 | 2 | 4 | 6 | 3 | 18 | 11.1% | 13 |
| 1979-80 | NHL | New York Islanders | 21 | 12 | 17 | 29 | 8 | 53 | 22.6% | 16 |
| 1980-81 | NHL | New York Islanders | 18 | 11 | 18 | 29 | 18 | 49 | 22.5% | 34 |
| 1981-82 | NHL | New York Islanders | 19 | 6 | 23 | 29 | 9 | 52 | 11.5% | 40 |
| 1982-83 | NHL | New York Islanders | 17 | 8 | 12 | 20 | 8 | 44 | 18.2% | 18 |
| 1983-84 | NHL | New York Islanders | 21 | 8 | 6 | 14 | 4 | 39 | 20.5% | 49 |
| 1984-85 | NHL | New York Islanders | 10 | 4 | 2 | 6 | 0 | 25 | 16.0% | 8 |
| 1985-86 | NHL | New York Islanders | 3 | 1 | 1 | 2 | -1 | 10 | 10.0% | 2 |
| 1986-87 | NHL | New York Islanders | 14 | 8 | 3 | 11 | -6 | 46 | 17.4% | 12 |
| 1987-88 | NHL | New York Islanders | 6 | 0 | 0 | 0 | -9 | 11 | 0.0% | 10 |
| 1989-90 | NHL | New York Islanders | 4 | 1 | 0 | 1 | -4 | 7 | 14.3% | 4 |
| 1990-91 | NHL | Pittsburgh Penguins | 23 | 3 | 4 | 7 | -1 | 16 | 18.8% | 49 |
| 1991-92 | NHL | Pittsburgh Penguins | 21 | 4 | 3 | 7 | 0 | 30 | 13.3% | 8 |
| 1993-94 | NHL | Pittsburgh Penguins | 2 | 0 | 0 | 0 | 0 | 1 | 0.0% | 0 |
| NHL Totals | – | 221 | 71 | 111 | 182 | 31 | 472 | 15.0% | 277 | |
| Season | Opponent | Date | G | A | P | +/- | PIM | PPG | SHG | S | Shifts | TOI |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Playoffs | @ WSH | Apr 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| Playoffs | vs WSH | Apr 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | - |
| Regular | vs WIN | Feb 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| Regular | vs QUE | Jan 27 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | - |
| Regular | vs OTT | Jan 25 | 0 | 0 | 0 | -1 | 2 | 0 | 0 | 0 | 0 | - |
| Year | Award |
|---|---|
| 1991-92 | Stanley Cup |
| 1978-79 | Art Ross Trophy |
| 1975-76 | Calder Memorial Trophy |
| 1979-80 | Conn Smythe Trophy |
| 1978-79 | Hart Memorial Trophy |
| 1988-89 | King Clancy Memorial Trophy |