The Orioles placed Means (arm) on the 10-day injured list Wednesday.
Baltimore manager Brandon Hyde already ruled Means out for the team's season-opening series this weekend in Boston, though the skipper was optimistic the southpaw would be able to pitch at some point in next week's four-game series in the Miami. The move to the IL now takes that off the table, as Means' stint won't be backdated to when he first suffered the injury in summer camp, per Joe Trezza of MLB.com. As a result, Means will miss at least two turns through the rotation, and he'll likely need to complete a bullpen session and/or a live batting practice session without discomfort before his activation is considered.