Great Britain's Paula Radcliffe (1831) looks on after pulling out of the 10,000 meter finals at the Olympic Stadium during the 2004 Olympic Games in Athens, Friday, Aug. 27, 2004. Portugal's Fernanda Ribeiro (2741) and Japans Harumi Hiroyama (2268) race by. (AP Photo/Rusty Kennedy)

Great Britain's Paula Radcliffe (1831) looks on after pulling out of the 10,000 meter finals as Ethiopia's Derartu Tulu looks back at the Olympic Stadium during the 2004 Olympic Games in Athens, Friday, Aug. 27, 2004. (AP Photo/Anja Niedringhaus)

Britain's marathon runner Paula Radcliffe cries during a press conference at the 2004 Olympic Games in Athens, Monday, Aug. 23, 2004. Radcliffe quit the Olympic marathon Sunday evening, Aug. 22, after she faded to the fourth place six kilometers from the finish. (AP Photo/Petros Giannakouris)

Britain's Paula Radcliffe and husband Gary Lough leave Panathinaiko Stadium in Athens, Sunday Aug. 22, 2004. after she dropped out of the women's marathon in the 2004 Olympic Games. (AP Photo/Richard Drew)

Overnight swimming sensation Eric Moussambani from Equatorial Guinea splashes his way down the pool as he completes a 50m demonstation at the Cook & Philip Pool in Sydney, Australia, Wednesday, September 20, 2000. Moussambani, one of the four-person swim team from Equatorial Guinea, was given the Speedo Fast.Skin bodysuit to test in the pool today. (AP Photo/Rob Griffith)

Overnight swimming sensation Eric Moussambani from Equatorial Guinea prepares for his 50m demonstation at the Cook & Philip Pool in Sydney, Australia, Wednesday, September 20, 2000. Moussambani, one of the four-person swim team from Equatorial Guinea, was given the Speedo Fast.Skin bodysuit to test in the pool today.(AP Photo/Rob Griffith)

Overnight swimming sensation, Eric Moussambani from Equatorial Guinea waves to a pool full of onlookers after he completes his 50m demonstation at the Cook & Philip Pool in Sydney, Australia, Wednesday, September 20, 2000. Moussambani, one of the four-person swim team from Equatorial Guinea was given the Speedo Fast.Skin bodysuit to test in the pool Wednesday. (AP Photo/Rob Griffith)

Australian swimmers Michael Klim and Ian Thorpe celebrate their team's gold medal in the men's 4 x 200m freestyle relay Tuesday, Sept. 19, 2000 at the Sydney International Aquatic Center during the Summer Olympics in Sydney. The Austrailians set a new world record with their time of 7:07.05. (AP Photo/Doug Mills)

Australian swimmer Ian Thorpe stands after his team in the men's 4 x 200m freestyle relay was awarded the gold medal Tuesday, Sept. 19, 2000 at the Sydney International Aquatic Center during the Summer Olympics in Sydney. The Austrailians set a new world record with their time of 7:07.05. (AP Photo/Doug Mills)

** FILE ** Australian William Kirby, Michael Klim, Ian Thorpe, and Todd Pearson, left to right, celebrate their world record gold medal win in the 4x200m freestyle relay at the Olympic Games in Sydney, Australia, in this September 19, 2000, file photo. Five-time Olympic champion Ian Thorpe has quit competitive swimming at the age of 24. "As of 2.53 on Sunday afternoon I decided I would not be swimming the world championships," Thorpe told a news conference Tuesday November 21, 2006. (AP Photo/Tom Hanson, FILE)

Swimming judges monitor the finish of Eric Moussambani, of Equatorial Guinea, as he competes alone in the first heat of the men's 100m freestyle Tuesday, Sept. 19, 2000 at the Sydney International Aquatic Center during the Summer Olympics in Sydney. Moussambani, who finished with a time of 1:52.72, was left as the lone swimmer after the two other swimmers in the heat, Karim Bare of Nigeria and Farkhod Oripov of Tajikistan, were disqualified at the start of the heat. (AP Photo/Rusty Kennedy)

Eric Moussambani, of Equatorial Guinea, competes alone in the first heat of the men's 100m freestyle Tuesday, Sept. 19, 2000 at the Sydney International Aquatic Center during the Summer Olympics in Sydney. The two other swimmers in the heat, Karim Bare of Nigeria and Farkhod Oripov of Tajikistan, were disqualified at the start of the heat. (AP Photo/Rusty Kennedy)

The Australian men's 4x100 freestyle relay team celebrate winning the gold medal during the medal ceremony at the Summer Olympics Saturday, Sept. 16, 2000 at the International Aquatic Centre in Sydney. From left are Chris Fydler, Ian Thorpe, Ashley Callus and Michael Klim. The team set a world record with a time of 3:13.67. (AP Photo/Doug Mills)

** FILE ** Australia's Ian Thorpe holds the Australian flag above his head during the medal ceremony for the men's 400m freestyle at the Summer Olympics at the International Aquatic Centre in Sydney, in this September 16, 2000, file photo. Five-time Olympic champion Ian Thorpe has quit competitive swimming at the age of 24. "As of 2.53 on Sunday afternoon I decided I would not be swimming the world championships," Thorpe told a news conference Tuesday November 21, 2006. (AP Photo/Eric Draper, FILE)

** FILE ** Australian swimmer Ian Thorpe holds his gold medal from the men's 400m freestyle at the Sydney International Aquatic Centre during the Summer Olympics in Sydney, in this Sept. 16, 2000, file photo. Olympic champion swimmer Thorpe has submitted his final evidence to the Australian Sports Anti-Doping Authority evidence in an attempt to clear his name. (AP Photo/David Longstreath, FILE)

Muhammad Ali and President Clinton walk arm-in-arm following the opening ceremony at Olympic Stadium for the Centennial Olympic Games in Atlanta Friday July, 19, 1996. Ali had the honor of being the final torch bearer that lit the Olympic Flame. (AP Photo/Wilfredo Lee)

Muhammad Ali watches as the flame climbs up to the Olympic torch during the opening ceremonies of the Summer Olympics Friday, July 19, 1996, in Atlanta. (AP Photo/Doug Mills)

Muhammad Ali waves to the crowd after receiving the torch from Janet Evans during the opening ceremonies of the Summer Olympics Friday, July 19, 1996, in Atlanta. (AP Photo/Ruth Fremson)

American swimmer Janet Evans looks on as Muhammad Ali lights the Olympic flame during the 1996 Summer Olympic Games opening ceremony in Atlanta Friday, July 19, 1996. (AP Photo/Michael Probst)

An arrow carrying the Olympic flame leaves the bow of Antonio Rebollo to light the Olympic Torch and open the XXV Olympiad in Barcelona at night on Saturday, July 25, 1992. Rebello, 37, is a two-time Paralympic bronze medalist archer from Madrid. (AP Photo/Dominique Mollard)