In the wake of Friday night’s bullpen-taxing loss to the Boston Red Sox, the Orioles called up 28-year-old left-hander Sean Gilmartin from Triple-A Norfolk to deepen the bullpen for Saturday’s day-night doubleheader.
Left-handed reliever Donnie Hart was optioned to make room for him on the 25-man roster.
Gilmartin produced a solid 2015 season as a middle reliever for the New York Mets after being taken in the Rule 5 draft in December 2014. He appeared in 50 games, going 3-2 with a 2.