Magglio Ordonez scores on a Frank Thomas double in the first inning against the Texas Rangers Tuesday. (Ted S. Warren/AP)

A Sox spokesman said it was not clear what caused Ordonez to leave the game and couldn't update his condition, other than to say he was undergoing "diagnostic medical tests."

White Sox manager Jerry Manuel wouldn't comment on why Ordonez left the game.

"He's getting checked out as we speak," Manuel said after the game. "I don't want to say anything until we get some definite, but he is being checked out as we speak."

Asked what was being checked out, Manuel said "Just his back area, around the kidney and that type of thing."

Ordonez didn't start Sunday's game with what he said was a sore back suffered while taking swings in the batting cage on Saturday. He hit a pinch-hit homer on Sunday and on Tuesday said his back was feeling much better.

Ray Durham sat out his second straight game with a sore left hand that has bothered him several weeks. He saw a hand specialist but tests came back negative. Manuel said it's not likely Durham will go on the disabled list.

"He'll be operating with a sort of a pad type of thing but he still could possibly be available," Manuel said.

Jimmy Greenfield covers the White Sox for MLB.com and can be reached by e-mail at jcgreenx@yahoo.com. This story was not subject to the approval of Major League Baseball or its clubs.