"I just know that he hurt his hand," Rays manager Joe Maddon said. "... I know he hit something ... in the clubhouse. I don't know why it happened. I don't know how it happened. I just know that it did happen."
Rodriguez is scheduled to see the team's hand specialist, Dr. Doug Carlan, on Tuesday.
Rodriguez was sent down last week to make room for Luke Scott returning from the disabled list. Rodriguez would have been recalled Saturday when the Rays expand their roster.
"He was going to play [upon his return]," Maddon said. "It's just too bad because he really fits in really well right now. We sent him down with specific ideas and instructions on what to work on regarding coming back and when he was going to come back. It was all set up. Everything was there, man. It's just unfortunate that this happened, because, especially against left-handed pitchers, he's a big part of what we do here."
Maddon said he was not sure how bad the injury is, so he does not know whether he will be able to rejoin the team down the stretch.