The A's announced that 25-year-old third baseman Matt Chapman underwent successful left thumb surgery Tuesday in Los Angeles.
Dr. Steven Shin performed an ulnar sided sesamoid bone excision and expects Chapman to make a full recovery to be ready for the start of spring training.
The thumb issue had bothered Chapman last spring training and at times during the season. Despite that, he slashed .278/.356/.508 with 24 home runs, 42 doubles, and 68 RBI.
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Chapman was also one of the best defensive players in baseball, leading MLB with 29 defensive runs saved. His 8.2 WAR ranked seventh in the league.
Chapman was a first-round draft pick of the A's in 2014. He has played two major league seasons, batting .263 for his career.