ANAHEIM, Calif. (AP) — Los Angeles Angels star Mike Trout will have surgery to repair a torn meniscus in his left knee, sidelining the three-time AL MVP indefinitely.

The Angels believe Trout will be able to return this season, general manager Perry Minasian said while announcing the injury Tuesday.

Trout is batting .220 with a major league-leading 10 homers, 14 RBIs and six stolen bases this year, but he will be sidelined by a major injury for the fourth consecutive season.

Trout had an MRI after playing in the Angels’ 6-5 victory over Philadelphia on Monday. The outfielder fought back tears while describing the pain that gradually crept up on him after the game.

“It’s crazy, because I look back and I don’t even know when I did it,” Trout said. “I was kind of telling myself, ‘Maybe I just banged it on something and I didn’t realize it.’ And then after the game, getting treatment on it, it was really sore. The plan was just to see how I felt in the morning. If I woke up and it was sore, just get it looked at. That was the plan. Last night was tough for me to sleep. It was just aching all night.”