ANAHEIM, Calif. (AP) -- Angels ace Jered Weaver is unsure how long he'll sit out to rest his biceps tendinitis.
Los Angeles' 16-game winner insisted Friday he'll return before the end of the season to help the Angels in their playoff chase.
Weaver says he couldn't "keep going out there at 75, 80 percent" while struggling with soreness that has periodically dogged him since high school.
The Angels skipped him in the rotation Friday in the opener of a seven-game homestand against Detroit, with Ervin Santana taking the start on normal rest.
Weaver has lost three of his past five after a 16-1 start to the season. He made his third straight All-Star team this summer despite missing three weeks to rest a back injury.
He has a 2.86 ERA and 121 strikeouts.