The bullpen faces some more uncertainty going forward with Zach Britton trying to figure out how to pitch with a sore left knee. He blew his first save opportunity in nearly two years last week, but that had to happen eventually. This is more about how much he’ll be available over the final five weeks of the season. Brad Brach has had a couple of rocky outings recently, but he turned in a clutch performance in Sunday’s game, getting the final five outs in a high-pressure situation to record his 17th save of the season. Mychal Givens also wasn’t his usual self, but O’s relievers still got it done all week, thanks to the continuing emergence of young Miguel Castro and some solid performances from the less-heralded members of the pen. Left-hander Richard Bleier continues to deliver on a regular basis, appearing in five games last week without allowing a run. He leads the club with a 1.78 ERA. Alec Asher came up from Norfolk to make two scoreless appearances. Castro pitched 5 1/3 scoreless innings and gave up just two hits in his two times on the mound. Mike Wright even got into the act with a scoreless inning. Those four combined to make 10 appearances and pitch 11 2/3 scoreless innings. Overall, the pen was 1-0 with a 2.11 ERA.