American swimmer Michael Phelps swims in a butterfly style as he competes in the summer of 400m individual swimmers on the first day of the 2012 Olympics at the Aquatics Center on July 28, 2012, London England.

Michael Phelps [source](https://www.abc.net.au/news/2012-07-28/michael-phelps-win-individual-medley-heat/4161332)
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Michael Phelps [source](https://www.abc.net.au/news/2012-07-28/michael-phelps-win-individual-medley-heat/4161332)