Tillman (shoulder) was officially placed on the 15-day disabled list Wednesday retroactive to Aug. 21.

EDGE Analysis

Baltimore's ace has been dealing with a shoulder ailment since his Aug. 11 start against the A's. His next turn in the rotation was pushed back a few days due to some shoulder discomfort, but the added rest did not help as he was shelled by the Astros on Saturday to the tune of six earned runs over two-plus innings. The Orioles have diagnosed him with shoulder bursitis, and there's no firm timetable for his return. Given that his placement on the DL is retroactive to Aug. 21, he could return in the first week of September if his shoulder is healed.