
| Regular Season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | League | Team | GP | G | A | Pts | PIM | +/- | GP | G | A | Pts | PIM | +/- |
| 1974-75 | OMJHL | Toronto | 70 | 49 | 86 | 135 | 85 | 0 | -- | -- | -- | -- | -- | -- |
| 1975-76 | WHA | Houston Aeros | 79 | 17 | 14 | 31 | 66 | 0 | 17 | 7 | 7 | 14 | 18 | 0 |
| 1976-77 | WHA | Houston Aeros | 80 | 24 | 31 | 55 | 109 | 0 | 11 | 3 | 4 | 7 | 12 | 0 |
| 1977-78 | WHA | Houston Aeros | 65 | 23 | 41 | 64 | 103 | 0 | 6 | 1 | 3 | 4 | 8 | 0 |
| 1978-79 | NHL | New York Islanders | 73 | 17 | 39 | 56 | 44 | 29 | 10 | 1 | 6 | 7 | 0 | 7 |
| 1979-80 | NHL | New York Islanders | 77 | 14 | 30 | 44 | 49 | 8 | 21 | 7 | 9 | 16 | 18 | -3 |
| 1980-81 | NHL | New York Islanders | 70 | 20 | 32 | 52 | 57 | 7 | 16 | 5 | 8 | 13 | 16 | 9 |
| 1981-82 | NHL | New York Islanders | 80 | 35 | 58 | 93 | 57 | 48 | 19 | 6 | 10 | 16 | 18 | 5 |
| 1982-83 | NHL | New York Islanders | 76 | 31 | 40 | 71 | 55 | 30 | 20 | 7 | 11 | 18 | 20 | 12 |
| 1983-84 | NHL | New York Islanders | 73 | 27 | 40 | 67 | 66 | 22 | 17 | 1 | 3 | 4 | 31 | 4 |
| 1984-85 | NHL | New York Islanders | 80 | 42 | 58 | 100 | 95 | 49 | 10 | 1 | 8 | 9 | 10 | 1 |
| 1985-86 | NHL | New York Islanders | 65 | 20 | 41 | 61 | 50 | 22 | -- | -- | -- | -- | -- | -- |
| 1985-86 | NHL | Calgary Flames | 9 | 3 | 4 | 7 | 10 | -1 | 22 | 7 | 9 | 16 | 49 | 3 |
| 1986-87 | NHL | Calgary Flames | 78 | 20 | 31 | 51 | 72 | -2 | 3 | 0 | 0 | 0 | 4 | 0 |
| 1987-88 | NHL | Calgary Flames | 74 | 17 | 41 | 58 | 84 | 10 | 6 | 2 | 5 | 7 | 8 | -1 |
| 1988-89 | NHL | Los Angeles Kings | 77 | 31 | 33 | 64 | 110 | 9 | 6 | 0 | 0 | 0 | 8 | -3 |
| 1989-90 | NHL | Los Angeles Kings | 73 | 31 | 37 | 68 | 62 | -8 | 10 | 1 | 2 | 3 | 6 | -6 |
| 1990-91 | NHL | Los Angeles Kings | 71 | 14 | 16 | 30 | 49 | 3 | 12 | 2 | 4 | 6 | 12 | 1 |
| 1991-92 | NHL | Chicago Blackhawks | 33 | 1 | 7 | 8 | 37 | 2 | -- | -- | -- | -- | -- | -- |
| 1991-92 | NHL | Quebec Nordiques | 19 | 2 | 4 | 6 | 14 | -7 | -- | -- | -- | -- | -- | -- |
| NHL TOTALS | 1028 | 325 | 511 | 836 | 911 | 221 | 172 | 40 | 75 | 115 | 200 | 29 | ||
| Season | League | Award |
|---|---|---|
| 1979-80 | NHL | Stanley Cup |
| 1980-81 | NHL | Stanley Cup |
| 1981-82 | NHL | Stanley Cup |
| 1982-83 | NHL | Stanley Cup |