Cal-Riverside is good enough to hang in against USC especially with the Trojans banged-up in the backcourt and in a flat spot. 
USC has played four straight Pac-12 games. This is its only remaining non-league regular season game. The Trojans just returned home after a satisfying Arizona trip beating Arizona this past Thursday and Arizona State this past Saturday. Letting down against a Big West Conference team is a real possibility for USC. 
Riverside has decent size and will play slow. The Highlanders should have plenty of energy and motivation stepping up in class. This is just their third game since Dec. 10.
Riverside surrendered 88 points to Hawaii this past Friday. However, that was the Highlanders' first game in nearly a month. If you discount that matchup, the Highlanders are giving up an average of 57.8 points in their other five games. They own a 57-42 victory over Washington, a Pac-12 team, on a neutral court.