Jamie Callahan

Callahan, a second-round pick in 2012, showed improvement from the time he started in the Fall Instructional League in 2012 to the time he reached short-season Lowell in 2013. He ironed out his delivery and displayed better stuff for the Spinners, holding opponents to a .221 batting average while striking out 54 batters in 59.2 innings. If he continues to develop as he did last season, Callahan will be an intriguing young arm in the lower level of the system. He throws a curve and change, both still developing and in need of consistency, and introduced a cutter toward the end of the season. Callahan is expected to start the season at Low-A Greenville and should be a rising prospect if he continues on his current development path.