The Orioles acquired Danny Coulombe in exchange for cash considerations on March 27. Baltimore already had Cionel Pérez on the roster, but the other lefties in the mix were starters unable to crack the rotation. Instead of turning to Nick Vespi, the Orioles found a 33-year-old reliever who was recently reassigned to minor-league camp by Minnesota.
Coulombe, Pérez, and Keegan Akin all made the Opening Day roster. Pérez struggled in the first half with a 4.45 ERA, and Akin struggled until the Orioles saw enough. Coulombe, on the other hand, immediately emerged as a dependable option in the back end of the bullpen.