Interim manager Chad Tracy said after Thursday's win over the Rangers that Contreras has a bruised right hand and is considered day-to-day, Tim Healey of The Boston Globe reports.
He appears to have dodged a serious injury after getting plunked in the hand by a 92.3-mph sinker from Jakob Junis in the eighth inning Thursday, as X-rays came back negative. It's unclear if Contreras will be available for Friday's series opener against Tampa Bay.