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08/26/08 7:55 PM ET

Padilla may miss start for Rangers

Nippert waiting in wings if right-hander unable to go

KANSAS CITY -- The Rangers are concerned that pitcher Vicente Padilla is having more discomfort in his right shoulder/neck area and may not be able to start on Friday against the Angels.

Padilla was unable to throw a bullpen session on Tuesday because of the discomfort. He'll try again on Wednesday. Most starting pitchers have one session between their starts, either two or three days before the game. It is possible that Padilla could pitch on Friday even if he doesn't have a bullpen session.

"We just have to wait and see where this goes," manager Ron Washington said before Tuesday's game with the Royals. "He just came in not feeling very good. We'll see if he does [his bullpen] tomorrow."

Dustin Nippert would likely pitch if Padilla couldn't go.

Padilla, who is 12-7 with a 4.98 ERA, has been bothered by inflammation in the muscle joint between neck and shoulder since the All-Star break. He has already been on the disabled list once and he had a start pushed back five days earlier this month because of the problem.

"I don't want to read anything into this," Washington said. "He hasn't said he can't make his next start, he just said he couldn't do his bullpen."

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