For a fan a leaky sky means three chill hours under umbrella, parka or slicker (opposite: drenched crowd at last year's Oklahoma-Northwestern game). A wet fan may draw some comfort from a flask, but for a player rain means fumbles and real mud in his eye.

High-stepping in mud, Purdue's Donn Mayoras slips past Wisconsin's Perry Huxhold.

Planting his left foot firmly in a mud puddle in the end zone, Purdue's Joe Kulbacki scores.

Drenched by downpour, Northwestern's Pom-Pom Girls wade in sideline mire during Oklahoma game.