This is an undated photo of athlete Jim Thorpe, the Carlisle back of the Carlisle Indian School in 1907-1908 and 1911-1912. He was also the unanimous selection to the all-time early day college team and was consensus All-American in 1911-12. After the 1912 Olympic games in Stockholm, Sweden, where he won 2 gold medals for the pentathlon and the decathlon, King Gustave V of Sweden declared Thorpe the "greatest athlete in the world." (AP Photo)

Britain's Chris Hoy shows his three gold medals of the Track Cycling, at the Beijing 2008 Olympics in Beijing,Tuesday, Aug. 19, 2008. (AP Photo/Christophe Ena)

Britain's Rebecca Adlington reacts as she wins the gold medal in the final of the women's 800-meter freestyle during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Mark Baker)

Britain's Rebecca Adlington shows her gold medal after the women's 800-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Mark J. Terrill)

Britain's gold medal winner Rebecca Adlington, center, is flanked by Italy's silver medal winner Alessia Filippi, left, and Denmark's bronze medal winner Lotte Friis after the women's 800-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Petr David Josek )

Britain's Rebecca Adlington swims to the gold medal in the final of the women's 800-meter freestyle during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Greg Baker)

Britain's Rebecca Adlington, right, and Camelia Alina Potec start the women's 800-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Mark J. Terrill)

Britain's Rebecca Adlington, left, is congratulated Britain's Cassie Patten after winning gold in the women's 800-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008.(AP Photo/Itsuo Inouye)

Britain's Rebecca Adlington celebrates with her country's flag after winning the gold medal in the women's 800-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Itsuo Inouye)

** FILE ** In this Saturday, Aug. 16, 2008 file photo Britain's Rebecca Adlington reacts as she wins the gold medal in the final of the women's 800-meter freestyle during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing. (AP Photo/Itsuo Inouye, File)

Britain's Chris Hoy celebrates after winning the gold medal of the Track Cycling Men's Keirin event, at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Ivan Sekretarev)

Britain's Chris Hoy celebrates after winning the gold medal of the Track Cycling Men's Keirin event, at the Beijing 2008 Olympics in Beijing, Saturday, Aug. 16, 2008. (AP Photo/Ivan Sekretarev)

Britain's Jamie Staff, leads teammates Jason Kenny and Chris Hoy as they compete during the Track Cycling Men's Team Sprint qualifying competition at the Beijing 2008 Olympics in Beijing, Friday, Aug. 15, 2008. (AP Photo/Ricardo Mazalan)

Britain's Chris Hoy celebrates after clinching the gold medal of the Track Cycling Men's Team Sprint, at the Beijing 2008 Olympics in Beijing, Friday, Aug. 15, 2008. Great Britain won the gold medals. (AP Photo/Ivan Sekretarev)

Britain's Jamie Staff, left, Chris Hoy, center, and Jason Kenny listen to the British national anthem after winning the gold medal of the Track Cycling Men's Team Sprint event, at the Beijing 2008 Olympics in Beijing, Friday, Aug. 15, 2008. (AP Photo/Christophe Ena)

Britain's gold medal winner Rebecca Adlington smiles during the medal ceremony of the women's 400-meter freestyle final during the swimming competitions in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Monday, Aug. 11, 2008. (AP Photo/David J. Phillip)

Gold medalist Rebecca Adlington of Britain, left, responds to spectators upon stepping up on the podium to receive the gold medal for the women's 400-meter freestyle as her teammate and bronze winner Joanne Jackson applauds during an awarding ceremony in the National Aquatics Center at the Beijing 2008 Olympics in Beijing, Monday, Aug. 11, 2008. (AP Photo/Mark J. Terrill)

Great Britain's Paula Radcliffe runs in the 10,000 meter finals at the Olympic Stadium during the 2004 Olympic Games in Athens, Friday, Aug. 27, 2004. Radcliffe did not finish the race. (AP Photo/Diether Endlicher)

Great Britain's Paula Radcliffe (1831) runs during the 10,000 meter finals at the Olympic Stadium during the 2004 Olympic Games in Athens, Friday, Aug. 27, 2004. Radcliffe pulled out of the race at the 22-mile mark. (AP Photo/Rusty Kennedy)

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. Radcliffe dropped out of the Olympic Marathon at the 22-mile mark. (AP Photo/Rusty Kennedy)