Orioles manager Brandon Hyde decided to give two of his top relievers the day off.
The rest of the bullpen came through to help Baltimore win another tight game.
Kyle Bradish and four relievers combined on a four-hitter, and the Orioles completed a three-game sweep of the New York Mets with a 2-0 victory Sunday. Adley Rutschman and Ryan O'Hearn each drove in a run for American League-leading Baltimore, which won for the eighth time in 10 games.
Cionel Pérez (4-1) relieved an erratic Bradish with two outs in the fifth and retired DJ Stewart on a bases-loaded grounder.