Dee was 9 of 9 from the free-throw line, and Rancifer was 5 of 9 from the field.
Jito Kok had a team-high six rebounds for the Toreros (10-8, 3-0 West Coast).
The Toreros led the entire game, building a 27-18 edge at halftime. San Diego shot 40.8 percent from the field for the game. Pepperdine shot 41.9 percent, but had 18 turnovers. San Diego made 26 points off Pepperdine's turnovers and had more second-chance points (22-12).
After San Diego took a 15-point lead in the second half, the Waves got no closer than six the rest of the game.
The Waves have a 56-38 series lead over San Diego.
Mike Brey is looking at former Notre Dame players to fill two assistant jobs that have opened up with the departures of Martin Ingelsby and Anthony Solomon.
Purdue's 2016-17 prospects got a jolt Wednesday when forward Caleb Swanigan announced he will return for his sophomore season.
Clemson's Jaron Blossomgame says he is withdrawing from the NBA draft and returning to school for a final season.