"I would think when we'd play a National League club, we'd want another position player for [the] double switch, pinch-hit," manager Dave Trembley said prior to Monday's game. "That's probably, in all likelihood, going to occur."
The Orioles will open up Interleague Play across the beltway in Washington, playing a three-game weekend set at Nationals Park. Prior to that, they have four games -- two each against Kansas City and Texas.
When they do make a roster move, Castillo would be the leading choice to be optioned back. The lefty was recalled from Triple-A Norfolk to give the Orioles bullpen depth, and he allowed a two-run homer in Sunday's loss. Long reliever Mark Hendrickson made Sunday's spot start in lieu of David Hernandez, who is dealing with right shoulder discomfort, which leaves the 'pen temporarily short-handed.
-- Brittany Ghiroli