Washington Redskins quarterback Doug Williams will be out for at least four weeks after undergoing surgery for appendicitis, a team spokesman said late Wednesday night.

"He's expected to be in the hospital for five to seven days, and is expected to be out for at least four weeks," spokesman Marty Hurney said. "That's four games at minimum."Mark Rypien, who has never played in a regular-season NFL game, will start against the Phoenix Cardinals on Sunday.

Williams was taken to Arlington Hospital in suburban Washington for tests complaining of abdominal pain after the team's regular practice Wednesday, Hurney said.

"He was experiencing some slight abdominal pain," Hurney said. "He practiced and took every snap."

Although Rypien, 26, has never seen regular-season action, he has been put to use in the preseason. Former Redskins quarterback Jay Shroeder, traded just two weeks ago because he was unhappy in a back-up role, was told by Coach Joe Gibbs he would be second string to Rypien because he lacked the "proper mental attitude."

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