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Katrin Holtwick of Germany battles Lenka Hajeckova of the Czech Republicat in their match at the Beach Volleyball Venue in the 2012 Summer Olympics, Saturday, July 28, 2012, in London.

Japan coach Masayoshi Manabe calls in a play against Algeria during a women's volleyball preliminary match at the 2012 Summer Olympics, at Earls Court Saturday, July 28, 2012, in London.

Katrin Holtwick of Germany celebrates at the end of a 2-0 win over the Czech Republic at the 2012 Summer Olympics, Saturday, July 28, 2012, in London.

Katrin Holtwick, right, and Illka Semmler, left, both from Germany celebrate after defeating Czech Republic in their Beach Volleyball competition at the 2012 Summer Olympics, Saturday, July 28, 2012, in London.

Japan's Yukiko Ebata (R) spikes the ball as Algeria's Lydia Oulmou attempts to block during the women's volleyball match in the 2012 London Olympic Games in London on July 28, 2012.

LONDON, ENGLAND - JULY 28: The peloton passes the Queen Victoria Memorial and Buckingham Palace during the start of the men's 249.5km road race on day one of the 2012 Olympics on July 28, 2012 in London, England.

US swimmer Michael Phelps competes in the men's 400m individual medley heats swimming event at the London 2012 Olympic Games on July 28, 2012 in London.

France's Sofiane Milous celebrates after winning his men's -60 kgs contest match against Georgia's Betkili Shukvani, during the judo event at the London 2012 Olympic Games on July 28, 2012 in London.

Saudi Arabia's Eisa Majrashi arrives to compete in the men's -60 kgs contest of the judo event at the London 2012 Olympic Games on July 28, 2012 in London.

LONDON, ENGLAND - JULY 28: Bahya Mansour Al Hamad of Qatar competes in the Women's 10m Air Rifle Shooting qualification on Day 1 of the London 2012 Olympic Games at The Royal Artillery Barracks on July 28, 2012 in London, England.

LONDON, ENGLAND - JULY 28: Shintaro Ikeda (L) and Reiko Shiota (R) of Japan return a shot against Nadiezda Zieba and Robert Mateusiak of Poland during their Mixed Doubles Badminton on Day 1 of the London 2012 Olympic Games at Wembley Arena on July 28, 2012 in London, England.

Australia's Kate Hornsey (L) and Sarah Tait are pictured after competing in the women's pair heats of the rowing event in which they came in in first place, during the London 2012 Olympic Games, at Eton Dorney Rowing Centre in Eton, west of London, on July 28, 2012.

LONDON, ENGLAND - JULY 28: Chen Xue of China dips to return the ball during Women's Beach Volleyball match between China and Russia on Day 1 of the London 2012 Olympic Games at Horse Guards Parade on July 28, 2012 in London, England.

Algeria's Zohra Bensalem (8) spikes the ball in front of Japan's Saori Kimura (18) during a women's volleyball preliminary match at the 2012 Summer Olympics, at Earls Court Saturday, July 28, 2012, in London.

Dancers perform at the Beach Volleyball Venue at the 2012 Summer Olympics, Saturday, July 28, 2012, in London.

Russia's rightback Irina Bliznova (C) shoots during the women's preliminaries Group A handball match Russia vs Angola for the London 2012 Olympics Games on July 28, 2012 at the Copper Box hall in London.

Great Britain's Heather Stanning, right, and Helen Glover during a women's rowing pair heat in Eton Dorney, near Windsor, at the 2012 Summer Olympics, Saturday, July 28, 2012. Great Britain won the heat.

British Beatie Guass reacts as she competes during the 10m Air Rifle Women qualification at the London 2012 Olympic Games at the Royal Artillery Barracks in London, July 28, 2012.

Anastasia Vasina from Russia dives for a ball during the Beach Volleyball match against China at the 2012 Summer Olympics, Saturday, July 28, 2012, in London.

Angola's coach Vivaldo Eduardo reacts during the women's preliminaries Group A handball match Russia vs Angola for the London 2012 Olympics Games on July 28, 2012 at the Copper Box hall in London.