The Bruins scored six unanswered runs to put them one win away from Oklahoma City.
The best 2-of-3 series starts Saturday at 5 p.m. and continues Sunday at 12 and 3 p.m.
#7 UCLA hit four more homers in the Regional Championship win over the Aztecs on Sunday.
Maddy Jelenicki, Stephany LaRosa and Delaney Spaulding all homered in UCLA's 4-1 win on Saturday.
Junior Allexis Bennett had three hits for the Bruins, who face Texas on Saturday at Noon.