Ariel Pena

Pena had a decent year with Triple-A Colorado Springs but was rewarded with a September callup thanks to a stellar 9.1 K/9 and a decreased walk rate. He received five starts during his short time in the majors and performed surprisingly well despite not overwhelming anyone in Triple-A. The right-hander went 2-1 with a 4.14 ERA and 27 strikeouts in 27.1 innings, though he also amassed 14 walks. Pena's decent finish could warrant a look during spring training for a potential rotation spot, but there is a good likelihood that Pena will start the year in the minors to either develop into a starter or fully transition into a bullpen arm.