"I didn't see it, but I guess he went down pretty hard," Scioscia said.
Haren was immediately escorted to the training room for an evaluation. The Angels later said Haren's problem was lower back tightness, and he will be examined again on Thursday after the club returns home. Haren, who is scheduled to start on Saturday against the Yankees, said he'll know more about whether he'll make that start based on Thursday's checkup.
"It depends on how I wake up," Haren said. "Even talking to the trainers, they don't know."
Haren is 5-3 with a 2.29 earned run average in 12 starts.