Bruin freshman Terri Fleming notches the clinching victory at court No. 6.
One-over par round puts Garrick in a tie for third.
Co-hosts have each won the tournament once in five years.
UCLA will host Washington State in Pauley Pavilion on Sunday at 6:30 p.m.
Kari Korver (13 points) was one of three Bruins in double figures.