Cumpton, 29, was a 9th round pick of the Pittsburgh Pirates in 2010 out of Georgia Tech, and has spent his entire career in the Pirates’ organization. He pitched in the majors in the 2013-14 seasons, years when current Rangers manager Jeff Banister was a bench coach for the Pirates.
Cumpton was a starter for most of his career until undergoing Tommy John surgery in March, 2015. He missed all of the 2015 season after that, and then missed all of 2016 as well due to shoulder surgery. He spent 2017 in a relief role.
Cumpton has a career 4.02 ERA and 3.04 FIP in 100.2 major league innings (15 starts, 7 relief appearances), and could give the Rangers a possible AAA depth option for the rotation.