RHP Miguel Castro
2018 Opening Day Age: 23
2017 Team: Orioles/Bowie
2017 Stats: 3-0, 4.44 ERA, 24 1/3 innings (Bowie); 3-3, 3.53 ERA, 66 1/3 innings (Orioles)
One of the Orioles’ brightest spots, Castro made 15 relief appearances of at least two innings in 2017. The Dominican Republic native only gave up one hit in six shutout innings out of the bullpen on August 3 after the Detroit Tigers roughed Chris Tillman up for seven runs (five earned) in two-plus innings. It was his longest outing since August 2014 with Single-A Lansing in the Toronto Blue Jays’ organization. With Castro atop this list, you can tell a lot about the state of the Orioles’ rotation. He has only made 36 starts in six years as a professional (just six in the past three seasons). One of those starts – his only one in the majors – came against the Tampa Bay Rays in the next-to-last game of 2017. In that outing, Castro suffered the loss after giving up three runs and six hits in 3 1/3 innings. He’s a big question mark, but the Orioles will see what he can do in spring training. Castro is out of minor league options, so at a minimum, he’ll likely have a spot in the bullpen in 2018.