Texas Rangers opening-day starter Matt Harrison is going to have back surgery and likely will be out of the rotation until after the All-Star break.
The Rangers said Friday that Harrison, on the disabled list because of an inflamed nerve in his back, is scheduled for an operation Tuesday to repair a herniated disk.
An 18-game winner and All-Star last season, Harrison still was having problems after epidural injections in his back.
The left-hander went 0-2 with an 8.44 ERA as tried to pitch with soreness in his lower back before going on the AL. He is in the first season of a $55 million, five-year contract.