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08/29/08 11:20 PM ET

Padilla heading to disabled list

Rangers right-hander nursing strained left hamstring

ANAHEIM -- The Rangers are planning on putting right-hander Vicente Padilla on the disabled list with a strained left hamstring. That would allow them to recall pitcher Kameron Loe from Triple-A Oklahoma.

The Rangers are expected to make that move on Saturday. On Friday, they optioned left-hander Bill White to Class A Bakersfield and added right-hander Luis Mendoza

Padilla has been bothered by inflammation in a muscle joint between his right shoulder and neck, but that is not the problem. Instead he injured the hamstring doing wind sprints in the outfield while the Rangers were in Kansas City.

Padilla tested both before Friday's game with the Angels by doing some running and some throwing. The hamstring was the worst of the two. The Rangers had hoped Padilla would be able to start on Wednesday against the Mariners, but he'll be on the DL until at least Sept. 9.

"His throwing went OK, but he wasn't comfortable running on the hamstring," Rangers general manager Jon Daniels said.

Padilla, who is 12-7 with a 4.98 ERA in 25 starts, has been bothered by the inflammation in the joint since the All-Star break, but the Rangers still have no plans to shut him down for the rest of the season.

He could still get as many as four more starts if he spends just the minimum time on the shelf. The move will be made retroactive to Aug. 24, which is the last time he started a game.

"We're counting on the guy," Daniels said. "We need him to pitch."

Dustin Nippert started on Friday in Padilla's spot and will likely start on Wednesday against the Mariners. Loe will likely be used in relief, even though he has started for the Rangers in the past.

"Kameron has done better and performed well in the bullpen," Daniels said.

White was optioned to Bakersfield because its season is over on Monday and White can rejoin the Rangers on Tuesday in Arlington. The Rangers added Mendoza on Friday because they needed a long reliever behind Nippert, who served in that role until being asked to fill in for Padilla.

T.R. Sullivan is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.