 Pettibone ran a triple-option style offense, very different from Dave Kragthorpe's "air express".The Beavers' five-game losing streak in 1990 quickly mushroomed into a 15-game losing streak, Oregon State's longest ever.In the 1991 Civil War, the Ducks were favored by 19½ points, but the Beavers beat the Ducks 14–3 to snap the nation's longest losing streak.