Winker exited Friday's game against the Dodgers after being hit by a pitch in the back, Charlie Goldsmith of The Cincinnati Enquirer reports.
EDGE Analysis
Friday's contest was Winker's first game back since landing on the injured list with a rib injury on Aug. 15. It's unclear how serious the new issue may be, but the fact that he has also dealt with back problems at various points in the campaign raises the level of concern.