| 17 Apr 91 | QF        | Boston BruinsBoston Bruins | 2 - 1 | Montreal CanadiensMontreal Cana |
| 17 Apr 91 | QF        | Pittsburgh PenguinsPittsburgh Pe | 2 - 4 | Washington CapitalsWashington Ca |
| 19 Apr 91 | QF        | St. Louis BluesSt. Louis Blu | 1 - 2 | Minnesota North StarsMinnesota Nor |
| 19 Apr 91 | QF        | Los Angeles KingsLos Angeles K | 4 - 3 | Edmonton OilersEdmonton Oile |
| 19 Apr 91 | QF        | Boston BruinsBoston Bruins | 3 - 4 | Montreal CanadiensMontreal Cana |
| 19 Apr 91 | QF        | Pittsburgh PenguinsPittsburgh Pe | 7 - 6 | Washington CapitalsWashington Ca |
| 21 Apr 91 | QF        | St. Louis BluesSt. Louis Blu | 5 - 2 | Minnesota North StarsMinnesota Nor |
| 21 Apr 91 | QF        | Los Angeles KingsLos Angeles K | 3 - 4 | Edmonton OilersEdmonton Oile |
| 21 Apr 91 | QF        | Montreal CanadiensMontreal Cana | 2 - 3 | Boston BruinsBoston Bruins |
| 21 Apr 91 | QF        | Washington CapitalsWashington Ca | 1 - 3 | Pittsburgh PenguinsPittsburgh Pe |
| 23 Apr 91 | QF        | Minnesota North StarsMinnesota Nor | 5 - 1 | St. Louis BluesSt. Louis Blu |
| 23 Apr 91 | QF        | Edmonton OilersEdmonton Oile | 4 - 3 | Los Angeles KingsLos Angeles K |
| 23 Apr 91 | QF        | Montreal CanadiensMontreal Cana | 6 - 2 | Boston BruinsBoston Bruins |
| 23 Apr 91 | QF        | Washington CapitalsWashington Ca | 1 - 3 | Pittsburgh PenguinsPittsburgh Pe |
| 25 Apr 91 | QF        | Minnesota North StarsMinnesota Nor | 8 - 4 | St. Louis BluesSt. Louis Blu |
| 25 Apr 91 | QF        | Edmonton OilersEdmonton Oile | 4 - 2 | Los Angeles KingsLos Angeles K |
| 25 Apr 91 | QF        | Boston BruinsBoston Bruins | 4 - 1 | Montreal CanadiensMontreal Cana |
| 25 Apr 91 | QF        | Pittsburgh PenguinsPittsburgh Pe | 4 - 1 | Washington CapitalsWashington Ca |
| 27 Apr 91 | QF        | St. Louis BluesSt. Louis Blu | 4 - 2 | Minnesota North StarsMinnesota Nor |
| 27 Apr 91 | QF        | Los Angeles KingsLos Angeles K | 5 - 2 | Edmonton OilersEdmonton Oile |
| 27 Apr 91 | QF        | Montreal CanadiensMontreal Cana | 3 - 2 | Boston BruinsBoston Bruins |
| 29 Apr 91 | QF        | Minnesota North StarsMinnesota Nor | 3 - 2 | St. Louis BluesSt. Louis Blu |
| 29 Apr 91 | QF        | Edmonton OilersEdmonton Oile | 4 - 3 | Los Angeles KingsLos Angeles K |
| 29 Apr 91 | QF        | Boston BruinsBoston Bruins | 2 - 1 | Montreal CanadiensMontreal Cana |