Northwestern's undefeated season is over.

The Wildcats lost 20-17 at Ryan Field to Purdue after former Wheaton Warrenville South star Dan Dierking scored the winning touchdown from seven yards out with 3:54 to play in the game. Dierking just cruised into the end zone for the go-ahead score.

To add insult to injury, NU linebacker Quentin Davie was called for a late hit on Purdue quarterback Rob Henry with about 45 seconds to play.