Means was removed from Wednesday's start against the Cardinals due to left elbow discomfort and will undergo medical testing, Jake Rill of MLB.com reports.
Irvin (4-2) allowed five runs (three earned) on six hits and struck out two without walking a batter over 3.1 innings to take the loss Wednesday versus the Cardinals.
Orioles (Kremer 3-4, 4.32) open 3-game series against Rays (Civale 2-4, 5.92)
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