Rangers Designate Eddie Gamboa, Select Preston Claiborne, Place Jeremy Jeffress On DL

The Rangers have announced that righty Eddie Gamboa was designated for assignment, via executive VP of communications John Blake. His 40-man spot will go to righty Preston Claiborne, whose contract was purchased. Texas also shifted reliever Jeremy Jeffress to the 10-day DL.

Gamboa, a 32-year-old knuckleballer, cracked the majors for the first time last year with the Rays. He was traded out of DFA limbo over the winter, with the Rangers interested in adding an optionable arm to their roster.

Through 77 2/3 innings over 14 starts at Triple-A this year, Gamboa had struggled to a 6.49 ERA. He’s carrying only 5.3 K/9, down from his typical levels in the upper minors, while issuing 4.5 free passes per nine innings.