The Orioles won the first game of a rainout double header despite falling behind early then lose the second with a lead in the ninth.
David Hess pitch four and a third innings allowing four runs but only one earned. He struck out four and walked two.
Andrew Cashner allowed five runs, four earned, overfour innings striking out eight ans walking two.
New Oriole Shawn Armstrong pitched a scoreless inning and a third.
Evan Phillips took the ninth inning loss in the nightcap but Miguel Castro was on the mound.
Jonathan Villar, Renato Nunez, Hanser Alberto and Richie Martin each had two hits.
Anthony Santander homered and drove in two. Dwight Smith Jr went 3-4.