Errol Thompson trades
| Detroit Red Wings acquire | Date | Pittsburgh Penguins acquire | ||
|---|---|---|---|---|
 | Gary McAdam | January 8, 1981 | Errol Thompson |  |
| Toronto Maple Leafs acquire | Date | Detroit Red Wings acquire | ||
|---|---|---|---|---|
 | Dan Maloney | March 13, 1978 | 1978 2nd round pick (#31-Al Jensen) | |
| 1980 2nd round pick (#25-Craig Muni) | 1978 1st round pick (#12-Brent Peterson) | |||
| Errol Thompson | ||||
| 1980 1st round pick (#11-Mike Blaisdell) | ||||