Zach Eflin was the obvious choice to earn the Orioles’ opening day start, especially after Grayson Rodriguez’s arm injury.

Bloss had a 6.91 ERA in eight starts for Triple-A Buffalo after being acquired, and he has allowed eight runs (all earned) in four appearances and eight innings of work this spring. Bloss did throw three brilliant innings his last time out, but allowed two or more runs in each of his first three appearances of the spring.