Yoelly Bello

De Paula zoomed up the Yankees' prospect rankings starting late in 2012, and while he kept up his dominance with Low-A Charleston in 2013, he hit a roadblock at High-A Tampa, putting up a 6.06 ERA and giving up 54 hits in 49 innings. He features a fastball in the low-to-mid 90s, a biting low-80s breaking ball, and an improving change-up. It's unclear whether the Yankees will challenge the 22-year-old by starting him at Double-A in 2014, but he's pretty clearly the organization's top rotation prospect right now and is worth following as a result.