Talk-show host Geraldo Rivera underwent surgery on his broken nose and skipped an appearance on this weekend's "Saturday Night Live," his spokesman said. Rivera's nose was broken Thursday in a brawl that broke out during the taping of an episode of his syndicated TV show on Young Hatemongers. His spokesman, Jeff Erdel, said Rivera was "groggy and very uncomfortable" after nearly three hours of surgery at a doctor's office Friday. The doctor ordered Rivera, bandaged and wearing a splint on his nose, to stay in bed. Dinah Minot, associate producer of NBC's "Saturday Night Live," said Rivera was to appear with Morton Downey Jr., another controversial talk-show host. The free-for-all Thursday, which lasted about a minute, started when John Metzger, leader of the White Aryan Resistance Youth, called Roy Innis, chairman of the Congress of Racial Equality, an "Uncle Tom." Innis got out of his chair and grabbed Metzger by the neck and other supremacists stormed the stage. Rivera's nose was broken by a chair that was thrown during the fracas.