FRISCO -- The Rangers could benefit this season from the work Keone Kela, the powerful right-handed reliever, has done on his shoulder and his head in the last 10 months.
Kela underwent stem-cell therapy treatment in November to counter persistent shoulder soreness. He went on the disabled list twice last season because of the condition.
Well before that, Kela confronted the problems that caused the club to banish him to Triple-A Round Rock last April because of unprofessional conduct during the final stage of spring training. Kela learned from the experience.
"I had to keep the street away from the corporate, as simple as that," Kela said Saturday during a stop on the club's preseason caravan at the home of its Double-A affiliate.