It was Gray's two free throws with 23 seconds left in regulation that allowed Cal (6-2) to tie the game. She also grabbed a rebound with five seconds to go when the Tigers missed a chance to win.
Pacific (4-3) took an early lead in overtime on two Kendall Kenyon free throws but Cal countered with two from Afure Jemerigbe before Gray's tie-breaking jumper as both teams struggled down the stretch.
Kenyon had a career high 29 points for the Tigers and grabbed 16 rebounds. Madison Parrish added 11 points and eight assists and KiKi Moore had 10 points, nine rebounds and seven assists.
Eight of Gray's rebounds were on the offensive end. Brittany Boyd added 16 points, nine rebounds, five assists and five steals.