MADISON, Wis. — No. 11 USC (2-1) opened as a 15.5-point favorite over Wisconsin (2-1) for Saturday’s Big Ten Conference matchup, per DraftKings. However, FanDuel had the Badgers as just a 12.5 underdog. The Trojans lead the all-time series 6-1. However, the Badgers won the most recent meeting, a 23-21…