Chapman underwent successful left thumb surgery in Los Angeles on Thursday. The club failed to disclose a specific timetable but he's expected to be healthy prior to spring training, Jane Lee of MLB.com reports. Specifically, Dr. Steven Shin performed an ulnar sided sesamoid bone excision along the left thumb. It's unclear when Chapman suffered the left thumb injury -- though he dealt with various right hand/wrist injuries during the year -- especially since his production remained at a high level throughout the final few weeks of the 2018 season. He finished off the year with a slash line of .278/.356/.508 with 24 home runs and 68 RBI in 145 games.
Chapman is not in the lineup Wednesday against the Mariners. Chapman will take a seat for the first time since the beginning of July as manager Bob Melvin rests some of his starters with the A's already qualified for the postseason and the AL West decided. The 25-year-old hit .306/.368/.571 with 30 doubles and 14 homers between absences from the lineup. Chad Pinder will start at the hot corner and hit seventh.
Chapman went 1-for-4 with a two-run home run Monday against the Mariners. Chapman took Shawn Armstrong deep in the seventh inning to give the Athletics a 5-3 lead. He now has 24 home runs for the season, powered by the nine long balls he put up in August. He's posted an impressive sophomore campaign, hitting .280/.357/.516 across 600 plate appearances.
Chapman went 2-for-4 with a double, two runs scored and two RBI on Thursday against the Angels. Chapman got the Athletics' offensive barrage started Thursday, doubling in both of his runs in the second inning against Matt Shoemaker. He now has an impressive 41 doubles this season, the foundation for his .519 slugging percentage -- a mark good enough for 10th in the American League. It's been an impressive sophomore campaign for Chapman, and he appears on track to end it positively, now racking up four multi-hit games in his last eight starts.
Chapman went 3-for-5 with a solo homer in Saturday's loss to the Rays. Chapman collected a pair of singles before taking Sergio Romo deep in the ninth inning for his 23rd homer of the season. The third baseman has now hit safely in 11 of 13 games this month, going 16-for-53 (.302) with a home run and 11 RBI over that stretch.