Runner-up: Jessie Harper
Arizona had been without a true pitching ace since Kenzie Fowler’s stellar freshman season in 2010. O’Toole was good in 2016 and great in 2017, winning Pac-12 Pitcher of the Year after leading the conference in ERA and strikeouts. She was also named a first-team All-American.
Arizona’s lineup was so deep and productive this season that Mauga’s impact might’ve been overlooked. Mauga was Arizona’s best slump-buster and, of course, its best home run hitter. She hit .356 as a senior with a career-best .507 on-base percentage to go with a team-high 25 home runs and 61 RBIs.