World champion pairs skater Tatiana Totmianina said yesterday she still doesn't know what caused her to fall and suffer a concussion during a weekend skating program, though she says she doesn't fear going back on the ice.

"My head [is] in pain, my body [is] in pain, but I don't really know what happened," Totmianina said on CBS's "The Early Show."

Totmianina fell face-first on Saturday night when partner Maxim Marinin was performing a one-handed lift during the free skating program at Skate America in Pittsburgh. She was taken to the hospital and was released on Sunday.

Larry Jones, chief of trauma at the hospital just blocks from Mellon Arena, said CT scans, X-rays and neurological tests were negative. Totmianina, who had no other injuries in the fall, and Coach Oleg Vasiliev said they expect she could begin training again in 10 days.

"I'm not afraid," Totmianina said of getting back on the ice. "I want to go right now."

* TRACK AND FIELD: Morocco's Hicham El Guerrouj, gold medalist in the 1,500 and 5,000 meters at this year's Athens Olympics, said he'll retire in 2006 after trying to add the world record for the longer distance to the three he already holds.

The 30-year-old runner has set benchmarks at 1,500 meters, the mile and 2,000 meters.

The four-time world champion told the Web site of the International Association of Athletics Federations that "2006 is the year of farewell."

After twice failing to win the Olympic 1,500 meters, El Guerrouj out-sprinted Kenya's Bernard Lagat in the Athens final to collect his first gold medal. Three days later he became the first man since Paavo Nurmi of Finland in 1924 to win both the 1,500 and 5,000 meters at the same Olympics.

* SOCCER: Manchester United said it has rejected a business plan from Tampa Bay Buccaneers owner Malcolm Glazer and ended takeover talks based on the plan.

Influential Manchester United fan groups have opposed Glazer's takeover bid. They contend Glazer is interested only in making a profit and would raise ticket prices.

* OBITUARY: Charles Seaver, the father of Hall of Fame pitcher Tom Seaver and a top amateur golfer in the 1930s, died yesterday. He was 93. Seaver died in Pebble Beach, Calif., after a short illness, the New York Mets said.

* AUTO RACING: Formula One has signed a five-year agreement to hold a race in Cancun starting in 2006, joining NASCAR in heading to Mexico.

-- From News Services