U.S. gymnast Gabrielle Douglas performs on the balance beam during the artistic gymnastics women's individual all-around competition at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Gregory Bull)

U.S. gymnast Gabrielle Douglas is hugged by coach Liang Chow after her final and deciding performance on the floor during the artistic gymnastics women's individual all-around competition at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Julie Jacobson)

Marta Karolyi, U.S. national women's gymnastics team coordinator, right, hugs U.S. gymnast and gold medallist Gabrielle Douglas during the artistic gymnastics women's individual all-around competition at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London.(AP Photo/Julie Jacobson)

USA's Stuart McNay and Graham Biehl, foreground, compete during the 470 class race at the London 2012 Summer Olympics, Thursday, Aug. 2, 2012, in Weymouth and Portland, England. (AP Photo/Bernat Armangue)

United States' Rebecca Soni celebrates winning gold and setting a new world record in the women's 200-meter breaststroke swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Thursday, Aug. 2, 2012. Soni set a new world record with a time of 2:19.59. (AP Photo/Michael Sohn)

United States' Tyler Clary celebrates winning gold in the men's 200-meter backstroke swimming final at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Thursday, Aug. 2, 2012. (AP Photo/Lee Jin-man)

Members of the U.S. women's eight team embraces coxswain Mary Whipple after winning the gold medal in Eton Dorney, near Windsor, England, at the 2012 Summer Olympics, Thursday, Aug. 2, 2012. (AP Photo/Natacha Pisarenko)

Italy's Valentina Vezzali celebrates with her seven-year-old son Pietro Giuguano after winning a semifinals match against France at women's team foil fencing at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Pat Semansky)

Samantha Arevalo Salinas of Ecuador starts in a women's 800-meter freestyle swimming heat at the Aquatics Centre in the Olympic Park during the 2012 Summer Olympics in London, Thursday, Aug. 2, 2012. (AP Photo/David J. Phillip)

Kayla Harrison of the United States reacts while competing against Mayra Aguiar of Brazil, (in white), during the women's 78-kg judo competition at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Ng Han Guan)

Gold medal winner Etienne Stott of Britain celebrates, with his partner Tim Baillie shown behind, after the final of the C-2 men's canoe double slalom at Lee Valley Whitewater Center, at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in Waltham Cross near London. (AP Photo/Kirsty Wigglesworth)

April Ross of the United States spins the ball during a beach volleyball match against Spain at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Dave Martin)

Tourists ride inside a cabin of the London Eye on Thursday, Aug. 2, 2012, in London. (AP Photo/Emilio Morenatti)

Braids decorate the mane of Pastor, ridden by Luiza Tavares de Almeida, of Brazil, as they compete in the equestrian dressage at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/David Goldman)

Britain's Chris Hoy celebrates with teammates after winning the gold medal in the men's team sprint track cycling event in the velodrome during the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Matt Rourke)

Italy's Valentina Vezzali reacts after Italy defeated Russia in the gold medal match at women's team foil fencing at the 2012 Summer Olympics, Thursday, Aug. 2, 2012, in London. (AP Photo/Dmitry Lovetsky)