The Orioles placed Rodriguez on the 15-day injured list Wednesday with right lat/teres discomfort.
Rodriguez was a late scratch from his scheduled start Tuesday versus the Blue Jays due to the injury and is now on the IL a day later. The Orioles aren't yet labeling the injury as a strain, but Rodriguez could still require more testing before a more specific diagnosis is available. He'll be eligible to return Aug. 19, but it's too soon to know whether the righty has a shot to be ready on that date. Albert Suarez pitched well as a last-minute substitution for Rodriguez on Tuesday and is likely to take his spot in the Baltimore rotation.