O'Neill relayed Wednesday that he expects to be placed on the 10-day injured list due to a right rotator cuff strain, Andy Kostka of TheBanner.com reports.
Analysis:O'Neill sustained the injury while diving for a catch during Saturday's 3-2 win over the Rays. A move to the IL means the veteran outfielder won't be available to play until at least early September, though the Orioles will get a better sense of O'Neill's return timeline once he's cleared to resume baseball activities.