Adams scored six points in overtime, hitting a crucial layup when the Bruins were clinging to a one-point lead. Evan Gordon and Jonathan Gilling both missed 3-pointers, and Adams grabbed the defensive rebound, got fouled and made both free throws with 26 seconds left.
Shabazz Muhammad added 21 points and Larry Drew II had 13 assists for the Bruins (21-7, 11-4 Pac-12), who got help joining idle Oregon in the top spot when USC upset No. 11 Arizona 89-78.
Jahii Carson scored 22 points, Gilling tied his career high with six 3-pointers and finished with 18 points, and Carrick Felix had 16 points and a career-high 18 rebounds for the Sun Devils (20-9, 9-7).