ANAHEIM, Calif. -- Angels superstar Mike Trout, hoping for a fully healthy season after being significantly limited by injury the past three years, needs knee surgery, general manager Perry Minasian said Tuesday.

Trout has a torn meniscus in his left knee, Minasian said.

The procedure, which is believed to be scheduled for Friday, isn't considered to be season ending. At this point, it is not known how long Trout will be out.

Trout played the entire game Monday, a come-from-behind, 6-5 victory over the Philadelphia Phillies, and even stole a base.

However, he began to experience soreness around the third inning, and an MRI on Tuesday morning revealed the tear.