World records set at 2012 London Olympics
Jamaica's 4x100-meter relay team won gold in 36.84
Jamaica's 4x100-meter relay team won gold in 36.84 seconds. (Aug. 11, 2012) (Credit: AP)
The U.S. women's 4x100-meter relay team won gold
The U.S. women's 4x100-meter relay team won gold in 40.82 seconds. (Aug. 10, 2012) (Credit: AP)
David Rudisha of Kenya ran a 1:40.91 in
David Rudisha of Kenya ran a 1:40.91 in the men's 800-meter final to win gold. (Credit: AP)

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Zhou Lulu of China lifted 333kg in the
Zhou Lulu of China lifted 333kg in the women's over-75kg weight class on August 5 to win gold. (Credit: AP)
Tatiana Kashirina of Russia lifted 151kg in the
Tatiana Kashirina of Russia lifted 151kg in the snatch in the women's over-75kg weight class on August 5 on the way to a silver medal. (Credit: AP)
Kazakhstan's Ilya Ilyin, who is in the men's
Kazakhstan's Ilya Ilyin, who is in the men's 94-kilogram division, lifted 185 kilograms in the snatch and a world-record 233 kilograms in the clean and jerk, for a world-record total of 418 kilograms. (Aug 4, 2012) (Credit: AP)
Great Britain's Women's Pursuit team, made up of
Great Britain's Women's Pursuit team, made up of Dani King, Laura Trott and Joanna Rowsell, finished in a record-breaking 3 minutes and 14.051 seconds. (Aug 4, 2012) (Credit: Getty Images)
Italy's Jessica Rossi set a world-record in trap
Italy's Jessica Rossi set a world-record in trap shooting, missing only one of 100 shots, including a record perfect qualifying round. (Aug. 4, 2012) (Credit: Getty Images)

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United States' women's 4x100-meter medley relay team members,
United States' women's 4x100-meter medley relay team members, from left, Dana Vollmer, Rebecca Soni, Missy Franklin and Alison Schmitt, bottom, had a combined time of 3:52.05, setting a new world-record. (Aug. 4, 2012) (Credit: AP)
China's Sun Yang finished the 1500-meter freestyle in
China's Sun Yang finished the 1500-meter freestyle in a record-breaking 14:31.02. (Aug. 4, 2012) (Credit: Getty Images)
Russia's Alexei Klimov broke the world record in
Russia's Alexei Klimov broke the world record in the men's 25-meter rapid fire pistol qualification, shooting a record-breaking 592 out of 600. (Aug. 3, 2012) (Credit: AP)
Belarus' Sergei Martynov finished with a record-breaking total
Belarus' Sergei Martynov finished with a record-breaking total of 705.5 points in the 50m Rifle Prone. (Aug. 3, 2012) (Credit: Getty Images)
Great Britain's Ed Clancy, Steven Burke, Peter Kennaugh
Great Britain's Ed Clancy, Steven Burke, Peter Kennaugh and Geraint Thomas finished the 400-meter team pursit in a record-breaking 3 minutes and 51.659 seconds. (Aug. 3, 2012) (Credit: Getty Images)

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United States' Missy Franklin completed the 200-meter backstroke
United States' Missy Franklin completed the 200-meter backstroke in a record-breaking 2:04.6. (Aug. 3, 2012) (Credit: Getty Images)
Great Britain's Sir Chris Hoy, Jason Kenny and
Great Britain's Sir Chris Hoy, Jason Kenny and Philip Hindes, finished the 750-meter team sprint in a record-breaking 42.600 seconds. (Aug. 2, 2012) (Credit: Getty Images)
China's Guo Shuang and Gong Jinjie finished the
China's Guo Shuang and Gong Jinjie finished the 500-meter team sprint in a record-breaking 32.422 seconds. (Aug. 2, 2012) (Credit: AP)
United States' Rebecca Soni finished the 200-meter backstroke
United States' Rebecca Soni finished the 200-meter backstroke in a record-breaking 2:19.59. (Aug. 2, 2012) (Credit: AP)
China's Lu Xiaojun lifted a record-breaking 175 kilograms
China's Lu Xiaojun lifted a record-breaking 175 kilograms in the snatch and then 204 kilograms in the clean and jerk, for a record-breaking total of 379 kilograms. (Aug. 1, 2012) (Credit: AP)
Hungary's Dániel Gyurta completed the 200-meter breaststroke in
Hungary's Dániel Gyurta completed the 200-meter breaststroke in a record breaking 2:07.28. (Aug. 1, 2012) (Credit: Getty Images)
North Korea's Kim Un-Guk, who is in the
North Korea's Kim Un-Guk, who is in the men's 62-kilogram division, lifted a record-breaking 327 kilograms total. (July 30, 2012) (Credit: Getty Images)
Kazakhstan's Zulfiya Chinshanlo lifted a record-breaking 131 kg
Kazakhstan's Zulfiya Chinshanlo lifted a record-breaking 131 kg in her clean and jerk attempt in the 53-kilogram division of the women's weightlifting competition. (July 29, 2012) (Credit: AP)
United States' Dana Vollmer completed the 100-meter butterfly
United States' Dana Vollmer completed the 100-meter butterfly in a record-breaking 55.98 seconds. (July 29, 2012) (Credit: AP)
South Africa's Cameron van der Burgh completed the
South Africa's Cameron van der Burgh completed the 100-meter breaststroke in a record-breaking 58.46 seconds. (July 28, 2012) (Credit: AP)
China's Ye Shiwen finished the 400-meter individual medley
China's Ye Shiwen finished the 400-meter individual medley with a record-breaking time of 4:28.43. (July 28, 2012) (Credit: AP)
South Korea's Im Dong-hyun set a world-record in
South Korea's Im Dong-hyun set a world-record in the 72-arrow ranking round with a score of 699. (July 27, 2012) (Credit: AP)
South Korea's men's archery team, from left, Kim
South Korea's men's archery team, from left, Kim Bubmin, Im Dong-Hyun and Oh Jin-Hyek, set a world record in the 216-arrow ranking round with a score of 2087. (July 27, 2012) (Credit: AP)