Mike Trout has a torn ligament in his left thumb that will require surgery, an injury that likely derails another strong run at the American League Most Valuable Player award.

The Los Angeles Angels announced Monday that Trout will have surgery on his left thumb after he tore ligaments when he slid into second base on a successful stolen base attempt during Sunday’s loss at the Miami Marlins. Trout, who won his second MVP award in 2016, was well on his way to a shot at a third, as he leads the American League in home runs (16), on-base percentage (.461), and slugging (.742).

He had already compiled a 3.5 Wins Above Replacement, a half-win more than the next nearest player, New York Yankees slugger Aaron Judge. Trout has finished no worse than fifth in MVP voting in his five seasons. This will also mark his first trip to the disabled list.

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Trout is under contract with the Angels through 2020, though in 2018 his salary leaps from $20 million to $34 million for the next three seasons.

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