"So we'll wait until we get through Wednesday until I give it a whole lot of thought but [Dave Wallace] and I were talking about it and the 11th is where you've got to start [a fifth guy]," said manager Buck Showalter, referring to a few upcoming off-days before that date. "If he's not fine by then, you're losing a lot of days."
Tillman, the Orioles' Opening Day starter, has had a fantastic second half, pitching to a 0.38 ERA in three second-half starts. He injured his ankle covering first base during his final inning of Wednesday's game.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, follow her on Facebook and Twitter @britt_ghiroli, and listen to her podcast. This story was not subject to the approval of Major League Baseball or its clubs.