The Boston Red Sox say they aren't concerned after Eduardo Rodriguez tweaked his right knee after he slipped on a wet mound during a winter ball start in Venezuela on Tuesday.

Dave Dombrowski characterized the injury as merely a "tweak," and the team hasn't asked Rodriguez to return to Boston to be examined by their medical staff.

"At this point, we are not sure if he is coming to Boston or not," Dombrowski said. "We are staying in contact with him in Venezuela and will determine that over the next few days."

Rodriguez missed five weeks in spring training and the first nine weeks of last season with a dislocated right knee that the club didn't deem serious when it happened Feb. 28.