TUCSON, AZ - Jessie Harper went 3-for-3 with three two-out RBI, helping third-ranked Arizona edge No. 23 Arizona State, 4-3 in the first game of this weekend's series at Hillenbrand Stadium.
Danielle O'Toole (25-3) earned the victory to kick off her senior weekend. Once she settled in, the left-hander was dominant, retiring 13 of the final 15 batters she faced, not allowing a hit after the third inning.
Arizona, meanwhile, struggled to solve ASU starter Breanna Macha (11-7), who allowed four runs, two earned, on six hits in the loss. Three clutch knocks from Harper were the difference.
The freshman went 3-for-3, her third career game with at least three hits and her seventh with at least three RBI.
Arizona (46-4, 16-3) with the victory reduced their magic number to four to clinch the program's first Pac-12 Championship in ten years.
The Wildcats cannot win the conference this weekend due to the fact that second place Utah is on a bye week and does not play.
UA and Arizona State (27-15, 6-0) meet on Saturday at 6 p.m. MST for Game 2 of the series.
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