The 77th Grey Cup was the 1989 Canadian Football League championship game played between the Saskatchewan Roughriders and the Hamilton Tiger-Cats at SkyDome in Toronto. The Roughriders defeated the Tiger-Cats, 43-40 on Dave Ridgway's winning field-goal.

Saskatchewan Roughriders (43) – TDs, Ray Elgaard, Jeff Fairholm, Donald Narcisse, Tim McCray; FGs, Dave Ridgway (4); cons., Ridgway (4); single, Terry Baker; safety touch.

Hamilton Tiger-Cats (40) – TDs, Tony Champion (2), Derrick McAdoo (2); FGs, Paul Osbaldiston (4); cons., Osbaldiston (4).

First Quarter
HAM—FG Osbaldiston 42-yard kick
HAM—FG Osbaldiston kick
SSK—Single Baker punt
HAM—TD Champion pass from Kerrigan (Osbaldiston convert)

Second Quarter
SSK—TD Elgaard pass from Austin (Ridgway convert)
HAM—TD McAdoo pass from Kerrigan (Osbaldiston convert)
SSK—TD Fairholm pass from Austin (Ridgway convert)
HAM—TD McAdoo pass from Kerrigan (Osbaldiston convert)
SSK—TD Narcisse pass from Austin (Ridgway convert)

Third Quarter
SSK—FG Ridgway kick
HAM—FG Osbaldiston kick
SSK—Safety Osbaldiston concedes in end zone
SSK—TD McCray 1-yard run (Ridgway convert)

Fourth Quarter
SSK—FG Ridgway 25-yard kick
HAM—FG Osbaldiston 47-yard kick
SSK—FG Ridgway 20-yard kick
HAM—TD Champion pass from Kerrigan (Osbaldiston convert)
SSK—FG Ridgway 35-yard kick

After an up-and-down regular season, the Saskatchewan Roughriders made the playoffs and were huge underdogs to make it to the Grey Cup. However, the Roughriders managed to defeat the Calgary Stampeders in the West Semi-Final 33-26 and went on to the Western Final to defeat the heavily favoured Edmonton Eskimos 32-21, to reach the Grey Cup game.

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