In his second professional season, Stephenson rose from low Class A Dayton to advanced Class A Bakersfield and finished 2013 at Double-A Pensacola. This week, MLBPipeline.com ranked him the No. 7 right-handed pitching prospect in all of baseball.
Stephenson was 7-7 with a 2.99 ERA over 22 starts combined at his three different teams last season. Over his 114 1/3 innings, he gave up 92 hits and 35 walks while striking out 136 batters.