The Chicago White Sox have signed left-handed pitcher Robbie Ross Jr. to a minor league contract with an invitation to major league spring training, it was formally announced on Sunday morning.

Ross spent an injury-marred 2017 campaign with the Boston Red Sox, where he appeared in just eight games out of the bullpen due to back issues. He allowed seven runs on 12 hits over nine innings of work and struck out nine opposing batters.

The 28-year-old, who skipped college, was originally selected by the Texas Rangers in the second round of the 2008 MLB June Amateur Draft. He proceeded to make his big league debut in 2012, pitching in 58 games out of the bullpen and going 6-0 with a sparkling 2.22 ERA. Across 65 frames of action, Ross surrendered 55 hits and fanned 47 hitters. The Lexington, Kentucky native continued to be a valuable piece out of the Rangers bullpen the following year, going 4-2 with a 3.03 ERA and giving up 63 hits while registering 58 punchouts through 62.1 innings.