With tonight's win, the Bruins (14-4) are off to their best start in conference play since 1969.
Grant Watson allowed just three hits over 6.1 innings to propel UCLA to the series tying win.
Junior James Kaprielian struck out a season-high 11 batters, but UCLA fell in game one to Cal.
The Bruins offered hitting and fielding instruction to military veterans on April 15.
The Bruins have won the past five series over Cal, going 12-3 over that span.