The Cubs have designated lefty Jack Leathersich for assignment, MLB.com’s Carrie Muskat tweets. The move clears space on the team’s 40-man roster for newly acquired outfielder Leonys Martin.
The 27-year-old Leathersich has spent most of the season at Triple-A Iowa, posting a 2.84 ERA, 5.7 BB/9 and an eye-popping 14.6 K/9 over 44 1/3 innings. Those numbers, combined with the fact that Leathersich has options remaining, could win him some attention on the waiver wire. He does, however, have limited big-league experience, and he struggled in brief duty with the Cubs earlier this season. The Cubs acquired Leathersich on a waiver claim from the Mets in the 2015-16 offseason, later re-signed him to a minor-league deal, then added him to their 40-man roster last winter.