The Texas Rangers on Tuesday put right-hander Alexi Ogando on the disabled list because of a strained right groin and promoted left-hander Michael Kirkman from Triple-A Round Rock.
The Rangers had hoped Ogando could avoid a trip to the DL but changed after consulting with team physician Dr. Keith Meister. The Rangers expect Ogando to miss from four to six weeks. He is scheduled to receive an injectionn of platelet-rich plasma to help the healing process.
Kirkman will be in the bullpen for the series opener against Arizona. The Rangers want to give left-hander Robbie Ross at least one more day off in the wake of his four-inning appearance at San Francisco on Sunday. Kirkman and Ross are candidates to take Ogando's spot in the rotation on Saturday against Houston.