Updated: Aug. 5, 2012 at 9:38 AM

Swimming at the London 2012 Olympics (405 images)

Michael Phelps swims for Olympic history, teammate Ryan Lochte tries to steal his thunder, and a star is born in teen phenom Missy Franklin at the Aquatic Center.

Chang Gyucheol of the Republic of Korea swims his heat in the Men's 100M Butterfly at the London 2012 Summer Olympics on August 2, 2012 in Stratford, London. Chang's time of 52.69 did not qualify for the final. UPI/Brian Kersey

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Tyler McGill of the United States swims his heat in the Men's 100M Butterfly at the London 2012 Summer Olympics on August 2, 2012 in Stratford, London. McGill's time of 51.95 qualified him for the final. UPI/Brian Kersey

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Zhou Jiawei of China treads water after his heat in the Men's 100M Butterfly at the London 2012 Summer Olympics on August 2, 2012 in Stratford, London. Zhou's time of 52.06 qualified him for the final. UPI/Brian Kersey

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Chad le Clos of South Africa treads water after his heat in the Men's 100M Butterfly at the London 2012 Summer Olympics on August 2, 2012 in Stratford, London. le Clos' time of 51.54 qualified him for the final. UPI/Brian Kersey

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