Jack Leiter's Rehab Faces Setback Due to Biceps Soreness

Jack Leiter, a right-handed pitcher for the Texas Rangers, is facing a setback in his rehabilitation process due to biceps soreness. This issue has led the team to temporarily halt his recovery efforts, which were already underway following arthroscopic ankle surgery in late June.

Leiter's discomfort arose during a one-inning rehab appearance with Triple-A Round Rock. Prior to this setback, he had not pitched for the Rangers since June 18, when he allowed six earned runs in a loss to the Minnesota Twins. In 2026, he has struggled with a 5.29 ERA over 15 starts, contrasting with a more favorable 3.86 ERA from the previous season.

The Rangers are currently evaluating Leiter's condition and the potential impact on his return to the rotation, which was already in question. The team is also managing other pitching challenges, including the absence of Nathan Eovaldi due to elbow inflammation. Despite a challenging season, the Rangers remain competitive in the AL West, trailing the division-leading Astros by just one game.