With the game tied at 46 with 9.1 seconds left, DeForest senior Aleah Grundahl received the inbounds pass and found junior Sam Schaeffer on the left wing and she used a left hand drive to get to the basket and lay in the game-winner.
The Norskies earned a 48-46 victory against Oregon.
Grundahl led DeForest with 12 points and junior Megan Mickelson added 10. Schaeffer finished with 7.
DeForest plays at Monona Grove at 7pm tonight, in a Division 2 regional final.