The 21-year-old had another setback with his right shoulder, leaving his off-season plans in doubt.
The Rangers no longer have the worst record in baseball, and might not have to worry about their closer in 2015.
The right-hander allowed eight runs in five innings as his season-long struggles against the AL West champs continued.
The players who open 2015 in the minors will be capable replacements when injuries arise.
The interim skipper isn’t worrying about any other possible job openings.
The 2014 team hits some new lows, matching the futility of Texas’ rock-bottom clubs.
The Rangers’ infielder received a second opinion Friday on his sore right shoulder muscle.
Lisalverto Bonilla allows two runs in five innings, and Ryan Rua leads the offense with four hits.