China's Juan Yao competes before wining the women's shot put F42/44 final (for athletes with limb deficiencies, such as amputations) at the 2012 Paralympics in London, on September 3, 2012. #

Laroslav Semenenko of Ukraine prepares to compete in the Men's 100m Backstroke - S6 heat 1 at the Aquatics Center, on August 30, 2012. The S6 classification is for swimmers with short stature, amputations of both arms or moderate coordination problems on one side of their body. #

Bronze medal winners Oksana Masters (left) and Rob Jones, of the United States, on their prosthetic legs at the awards ceremony for mixed double sculls, on September 2, 2012, #

Britain's Richard Whitehead, with his gold medal after winning the men's 200m T42 (for athletes with limb deficiencies, such as amputations) final race in London, on September 1, 2012. #

Italy's Assunta Legnante wears a mask as she competes in the women's discus throw - F11/12 (visual impairment) at the Olympic Stadium in London, on September 1, 2012. #

Joseph Berenyi of the U.S. poses with his gold medal after winning the men's Individual C3 pursuit (for cyclists with limb deficiencies, such as amputations) final during the cycling competition, on August 31, 2012, in London. #

Rustam Nurmukhametov of Russia, prior to his Men's 100m Freestyle S11 heat (for swimmers with complete or nearly complete loss of sight), at the Aquatics Center, on August 31, 2012. #

Pattaya Tadtong and Watcharaphon Vongsa of Thailand celebrate winning a point during the Mixed Team Boccia - BC1-2 gold medal final on day 6 of the London 2012 Paralympic Games, on September 4, 2012. #

Yohansson Nascimento of Brazil uses supports for his arms as he waits on the blocks to compete in the men's T46 400-meter category final, on September 4, 2012, in London. #

Britain's Mark Lee Colbourne celebrates winning the men's individual C1 pursuit final cycling event at the Olympic Park's Velodrome in east London, on August 31, 2012. #

United States' Matt Scott falls during a men's Group A preliminary wheelchair basketball game against Australia in London, on September 2, 2012. Australia won 65-49. #

Lee Brunton of Great Britain takes on the Iranian defense in the Men's Team Football 5-a-side B1 (visual impairment) in the Olympic Park on September 4, 2012. All athletes wear eyeshades to ensure their visual impairments are equal. The ball is equipped with a noise-making device, and each team has a sighted, able-bodied goalkeeper. #

William Bayley of Britain cries after losing to Jochen Wollmert (left) of Germany, who embraces Bayley, following their Men's Singles C7 classification Table Tennis Final, on September 2, 2012. The C7 class describes a physical impairment for athletes who compete from a standing position -- the lower the number, the greater the impact the impairment has on an athlete's ability to compete. #

Germany's Simone Briese Baetke (right) fights against Russia's Ludmilla Vasileva in Women's Individual Foil- Category B at the ExCel venue, on September 5, 2012. Baetke won the match and moved into the quarter-finals. #

China's Jingjing Zhou, after her victory over Britain's Justine Moore in the qualification round of Women's Individual Foil- Category B on the first day of Fencing, on September 4, 2012. Category B athletes have an impairment that affects either their trunk or their fencing arm. #

Gordon Reid of Great Britain prepares to serve during the Men's Singles Wheelchair Tennis round 64 match against Takuya Miki of Japan at Eton Manor, on September 1, 2012. Reid won the match 6-1, 6-2. #

Silver medalist Keiichi Kimura of Japan poses following the medal ceremony for the Men's 100m Breaststroke - SB11 final on day 5 of the 2012 Paralympic Games, on September 3, 2012. #

Terezinha Guilhermina of Brazil and her guide Guilherme Soares de Santana lie on the track after falling in the Women's 400m - T12 Final in the Olympic Stadium, on September 4, 2012 in London, England. #

Netherlands' silver medalist Marlou Van Rhijn (left) France's gold medalist Marie Amelie Le Fur (center) and US bronze medalist April Holmes, on the podium during the medal ceremony of the women's 200m T44 race (for athletes with limb deficiencies, such as amputations) in London, on September 3, 2012. #

Ebrahim Ranjbarkivaj of the Islamic Republic of Iran competes in the Men's Individual Recurve Archery - W1/W2 at The Royal Artillery Barracks, on September 3, 2012 in London, England. #

Marlou van Rhijn from the Netherlands, second right, waits to be called up into the blocks before the start of a women's 100m T44 round 1 race in London, on September 1, 2012. Van Rhijn won, setting a new world record of 13.27 seconds. #

Adam Knott (back right) of Great Britain takes a throw in the Men's Team Goalball preliminary match against Finland on Day 4 of the 2012 Paralympic Games, at the Copper Box, on September 2, 2012. Finland went on to win the match 7-3. #

British gold medalist David Weir celebrates after crossing the finish line in the men's 1500m T54 category final at the 2012 Paralympics, on September 4, 2012, in London. #