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London Olympics: July 31, 2012

July 31, 2012 / 11:56 AM EDT / CBS News

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Alison Williamson of Great Britain competes in her Women's Individual Archery 1/32 Eliminations match against Bishindee Urantungalg of Mongolia during Day 4 of the London 2012 Olympic Games at at Lord's Cricket Ground on July 31, 2012.

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Zige Liu of China competes in the Women's 200m Butterfly heat 4 on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Sarah Barrow and Tonia Couch of Great Britain compete in the Women's Synchronized 10m Platform Diving on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Travis Stevens of the United States (white) competes against Ole Bischof of Germany in the Men's -81 kg Judo on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Ryo Tateishi of Japan competes in the Men's 200m Breaststroke heat 5 on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Gareth Evans of Great Britain competes in the Men's 69kg Weightlifting on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Gareth Evans of Great Britain competes in the Men's 69kg Weightlifting on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Ryo Tateishi of Japan competes in the Men's 200m Breaststroke heat 4 on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Tina Manker (R) and Stephanie Schiller of Germany compete in the Women's Double Sculls Repechage on Day 4 of the London 2012 Olympic Games at Eton Dorney on July 31, 2012.

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Taufik Hidayat of Indonesia looks on during his Men's Singles Badminton match against Pablo Abian of Spain on Day 4 of the London 2012 Olympic Games at Wembley Arena on July 31, 2012 in London, England.

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Beni Bertrand Binobagira of Burundi competes in heat 1 of Men's 100m Freestyle on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Junior Antonio Sanchez Rivero of Venezuela celebrates a lift in the Men's 69kg Weightlifting on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Jae-Bum Kim of Korea (blue) competes with Travis Stevens of the United States in the Men's -81 kg Judo on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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(L-R) Jemma Lowe of Great Britain, Zige Liu of China and Zsuzanna Jakabos of Hungary compete in the Women's 200m Butterfly heat 4 on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Urska Zolnir of Slovenia (white) competes against Claudia Malzahn of Germany in the Women's -63 kg Judo on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Ning Ding of China plays a forehand during the Women's Singles Table Tennis quarter-final match against Ai Fukuhara of Japan on on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Pau Gasol of Spain lays up a shot as he breaks past Aron Baynes of Australia during the Men's Basketball Preliminary Round match between Australia and Spain on Day 4 of the London 2012 Olympic Games at Basketball Arena on July 31, 2012.

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Richard Brickell of Great Britain competes during the Men's Skeet Shooting qualification round on Day 4 of the London 2012 Olympic Games at The Royal Artillery Barracks on July 31, 2012.

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Serge Ibaka #14 of Spain goes up against Mark Worthington #11 of Australia in the Men's Basketball Preliminary Round match between Australia and Spain on Day 4 of the London 2012 Olympic Games at Basketball Arena on July 31, 2012.

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Daniyar Ismayilov of Turkmenistan competes in the Men's 69kg Weightlifting on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Vladimir Gojkovic #11 of Montenegro challenges Tamas Kasas #5 of Hungary during their Men's Water Polo preliminary round Group B match on Day 4 of the London 2012 Olympic Games at Water Polo Arena on July 31, 2012.

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Takaharu Furukawa of Japan competes in his Men's Individual Archery 1/32 Eliminations match against Kar Wai Calvin Lee of Hong Kong during Day 4 of the London 2012 Olympic Games at at Lord's Cricket Ground on July 31, 2012.

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Charlotte Harrison of New Zealand (L) challenges Tarryn Bright of South Africa during the Women's Hockey Match between South Africa and New Zealand on day 4 of the London 2012 Olympic Games at Hockey Center on July 31, 2012.

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Bishindee Urantungalag of Mongolia competes in her Women's Individual Archery 1/16 Eliminations match against Jennifer Nichols of United States during Day 4 of the London 2012 Olympic Games at at Lord's Cricket Ground on July 31, 2012.

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Angelique Kerber of Germany returns a shot against Timea Babos of Hungary during the second round of Women's Singles Tennis on Day 4 of the London 2012 Olympic Games at Wimbledon on July 31, 2012.

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Venus Williams of the United States returns a shot to Aleksandra Wozniak of Canada during the second round of Women's Singles Tennis on Day 4 of the London 2012 Olympic Games at Wimbledon on July 31, 2012.

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Emanuel Rego of Brazil dives for a shot during the Men's Beach Volleyball Preliminary match between Brazil and Switzerland on Day 4 at Horse Guards Parade on July 31, 2012.

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Sarah Barrow and Tonia Couch of Great Britain practice ahead of the Women's Synchronized 10m Platform final on Day 4 of the London 2012 Olympic Games at the Aquatics Center on July 31, 2012.

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Phillip Dutton of the United States riding Mystery Whisper baulks at a jump in the Show Jumping Equestrian event on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012.

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Gaelle Valcke (L) of Belgium slips as she challenges Baorong Fu of China during the Women's Hockey Match between Belgium and China on day 4 of the London 2012 Olympic Games at Hockey Center on July 31, 2012.

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Nasser Al-Attiya of Qatar reacts after competing in the Men's Skeet Shooting final round on Day 4 of the London 2012 Olympic Games at The Royal Artillery Barracks on July 31, 2012.

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Zara Phillips of Great Britain riding High Kingdom competes in the Individual Jumping Equestrian Final on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012.

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Andy Murray of Great Britain returns a shot to Jarkko Nieminen of Finland during the second round of Men's Singles Tennis on Day 4 of the London 2012 Olympic Games at Wimbledon on July 31, 2012.

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Zara Phillips of Great Britain riding High Kingdom after competing in the Individual Jumping Equestrian Final on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012.

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General view from the stands during the Show Jumping Equestrian event on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012.

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Byungchul Choi of Korea celebrates winning his match against Jianfei Ma of China during the quarterfinals of the Men's Foil Individual on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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A gymnast performs during warmups before the start of the Artistic Gymnastics Women's Team final on Day 4 of the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012.

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Emmanuel Lucenti of Argentina loses to Antoine Valois-Fortier of Canada in the Men's -81 kg Judo on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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(L-R) Gemma Lowe of Great Britain and Kathleen Hersey of the United States dive in the water at the start of the Women's 200m Butterfly semi final 2 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012.

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Gemma Lowe of Great Britain competes in the Women's 200m Butterfly semi final 2 on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012.

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Kristian Ipsen and Troy Dumais of the United States practice for the Men's Synchronized 3m Springboard on Day 4 of the London 2012 Olympic Games at the Aquatics Centre on July 31, 2012.

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Christinna Pedersen and Kamilla Rytter Juhl of Denmark celebrate victory in their Women's Doubles Badminton match against Yunlei Zhao and Qing Tian of China on Day 4 of the London 2012 Olympic Games at Wembley Arena on July 31, 2012.

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Alaaeldin Abouelkassem of Egypt competes with Byungchul Choi of Korea in the Men's Foil Individual Semifinal against on Day 4 of the London 2012 Olympic Games at ExCeL on July 31, 2012.

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Nasser Al-Attiya of Qatar reacts after competing in the Men's Skeet Shooting final round on Day 4 of the London 2012 Olympic Games at The Royal Artillery Barracks on July 31, 2012.

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Victoria Komova of Russia competes on the uneven bars in the Artistic Gymnastics Women's Team final on Day 4 of the London 2012 Olympic Games at North Greenwich Arena on July 31, 2012.

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Maria Sharapova of Russia react after a shot against Laura Robson of Great Britain during the second round of Women's Singles Tennis on Day 4 of the London 2012 Olympic Games at Wimbledon on July 31, 2012.