Oller (0-1) took the loss Monday against Arizona, allowing five runs on three hits and four walks across 4.2 innings. He struck out two.
Two of Oller's three hits allowed found the bleachers, with Adrian Del Castillo launching a grand slam in the third inning after Oller walked the bases loaded, and Joc Pederson hitting a solo homer in the fifth frame. While the 29-year-old's first MLB start of the year didn't inspire much confidence, the Marlins rotation is plagued by injuries, which could result in Oller getting another chance. Oller logged a 2.88 ERA across 25.0 innings with Triple-A Jacksonville before being recalled.