O'Hearn is out of the lineup for Sunday's game against the Reds.
The lefty-hitting O'Hearn finds himself on the bench for the second day in a row while Cincinnati brings another southpaw (Nick Lodolo) to the hill. O'Hearn's absence will allow the Orioles to give infielder Gunnar Henderson a day off playing defense, as the third-year player instead serves as Baltimore's designated hitter.