ANN ARBOR, Mich. (AP) -- Jon Gaston scored on a third-inning error and Arizona hung on for a 4-3 victory over Michigan on Saturday night.
The Wildcats (40-17) are a win away from advancing to the super regional round of the NCAA Tournament for the first time in four seasons.
Brad Glenn and C.J. Ziegler had RBI hits during Arizona's three-run first and Gaston scored the game-winner two innings later when Michigan shortstop Jason Christian misplayed a two-out grounder.
Michigan's Ryan LaMarre made it a one-run game when he homered in the top of the seventh. The Wolverines had the tying run aboard with one out in the ninth, but reliever Jason Stoffel induced consecutive groundouts to earn his 12th save of the season.
Christian tripled in Michigan's first run in the fifth and Zach Putnam added a solo homer in the sixth that chased starter David Coulon (8-3), who gave up two runs in the first five innings.
The Wolverines' Chris Fetter (10-2) went the distance and lost for the first time at home after striking out seven and allowing eight hits and three earned runs.
The Wildcats, who have failed to advance in their last two regional appearances, can earn a super regional berth Sunday with a victory over Michigan (46-13) or Kentucky. The latter two teams play an elimination game earlier in the day.