Foster also had seven steals and five assists for the Broncos (2-0). He was 10 of 18 from the field with a pair of 3-pointers, and 8 for 9 from the free-throw line. Foster has 1,748 points, 13 more than Rambis, the former NBA player and coach who played at Santa Clara from 1976-80.
Marc Trasolini, who missed last season with a knee injury, had nine points and 10 rebounds for the Broncos.
The game was part of the CBE Hall of Fame Classic.
Rob Loe led Saint Louis (1-1) with 13 points. Cody Ellis had 11 points for the Billikens, who beat South Carolina-Upstate in their opener Friday night.
The Billikens led in the game’s first minute on Wednesday but Santa Clara led 44-31 at halftime behind Foster’s 17 points.