One of the secondary pieces in the Andrew Miller deal, Justus Sheffield is a highly regarded prospect.
Although not as touted as the main piece of the package, Clint Frazier, the southpaw was thought of highly enough to be drafted in the first round by the Cleveland Indians and to be a consensus top 100 prospect.
The 20-year-old was having an average season with the Indians before he was traded, with a 3.59 ERA. After the trade, the lefty was lights out, with a 1.73 ERA in High-A Tampa while registering 27 strikeouts in 29 innings of work.
Sheffield was also called up to Double-A for one start. In this one start, he was nothing short of dominant. He pitched four innings of no run ball with nine strikeouts. Although he did issue three walks, demonstrating his lack of command as well as his potential.
If Sheffield could improve upon his control (3.8 BB/9) he should become a stud lefty.