It was a day of good news and bad news for manager Ron Washington.
Less than an hour after finding out his contract was being extended through 2010, Washington got the word he would be without his star outfielder for at least a month.
Josh Hamilton will have surgery Tuesday to repair a partially torn abdominal muscle and will miss the next four to six weeks.
"That's great because we thought it would be longer," Washington said. "It looks like we'll have a chance to get him back after the (July) All-Star break. At least it won't be September."
Connecting you to your favorite North Texas sports teams as well as sports news around the globe.
The team had feared that the injury was a hernia similar to the one that shut down second baseman Ian Kinsler for 12 weeks last year.
An MRI exam on Monday confirmed the diagnosis of the partial tear.
Dr. William Meyers, who examined Hamilton in Philadelphia, will perform the surgery.
Hamilton was injured May 17 when he crashed into an outfield wall while making a leaping catch against the Los Angeles Angels. He went on the disabled list last week.
Hamilton originally injured himself running into the wall in Toronto earlier this year.
Also Monday, the Rangers said starting pitcher Brandon McCarthy has been diagnosed with a stress fracture in his right shoulder blade and will miss Tuesday's scheduled start against the Toronto Blue Jays. The right-hander was out nearly four weeks because of a similar injury in 2007. McCarthy is tied for his career high and the team lead with five wins.
The Rangers said Doug Mathis would make Tuesday's start, unless he was needed to pitch in relief Monday. The 26-year-old right-hander has pitched only one inning for Texas since being promoted from Triple-A Oklahoma City, where he was 4-2 with a 2.89 ERA in 10 starts.