Pacific got to the free-throw line for 30 attempts and converted 20 while Santa Clara managed just eight attempts.
The Tigers (12-17, 4-13 West Coast) led by 13 with under a minute left in the game. Brandon Clark scored on a layup and, after Jarvis Pugh scored on a layup, converted two free throws to cut the Pacific lead to seven, 60-53. Pugh scored on a second layup after Dulani Robinson hit a pair of free throws to make it 62-55, but Robinson tacked on two more free throws to put the game away.
Jared Brownridge scored 18 points to lead Santa Clara (12-17, 6-11).