Stephany LaRosa drove in a pair and Ally Carda retired the last 12 of the game in Saturday's win.
The top-ranked Bruins head to Seattle for a three-game series at #5 Washington.
UCLA recorded its first conference sweep of Arizona since 2006 with Monday's win.
Mysha Sataraka was named Pac-12 Player of the Week on Monday for the second time this year.
Mysha Sataraka's homer tied it and Gracie Goulder's grand slam won it on Sunday against Arizona.
Ally Carda struck out five in a two-hit shutout and Brittany Moeai drove in the game's lone run.
Sunday's game is sold out, but tickets are available for Saturday and Monday's contests.
The Bruins went 6-0 at the UCLA/CSUN Invitational following Sunday's doubleheader sweep.
Ally Carda and Jessica Hall combined for 19 strikeouts in Saturday's doubleheader sweep for #3 UCLA.
Sophomore Mysha Sataraka homered in both ends of Friday's doubleheader sweep for #3 UCLA.
Sophomore Brittany Moeai had two hits and drove in two runs in Wednesday's loss.
Delaney Spaulding recorded her second homer and walk-off hit of the year Tuesday against Michigan.