Already on the 15-day DL with a left groin strain, Cain injured his hip flexor during a game Tuesday night with Double-A Northwest Arkansas. The Royals had originally expected Cain to return to the club on Friday. That now appears to be wishful thinking, though manager Ned Yost will not speculate until he receives an update from the team doctors.
"He has to fly back to Kansas City and have it re-evaluated by our doctors," Yost said. "It was in a different spot. It was a hip flexor, it wasn't in the groin like it was before. We'll just see what the doctor says and go from there.
Cain hasn't played since April 10. In five games, he hit .133. Mitch Maier and Jason Bourgeois have filled in for the speedy center fielder, batting .267 and .214, respectively. Maier had three hits and two RBIs in Tuesday's 4-3 loss to Cleveland.
"I've got confidence in Mitch Maier and Jason Bourgeois," Yost said. "I don't point to that as the reason we've lost 12 in a row. We lost him right before this streak started, but I don't think it has any significance. He was hitting [.133] and playing great defense in the outfield."