Fast: US swimmer Michael Phelps competes in the men's butterfly semi-final swimming event at the London 2012 Olympic Games on July 2012 in London - AFP Getty Images - via DailyMail
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Michael Phelps has long been hailed as the greatest butterfly swimmer of all time, but why is he so suited to a stroke which is usually considered the most demanding of all in the pool?
Michael Phelps prior to the Butterfly Semi-Final during the FINA World Championships at the Stadio del Nuoto on July 2009 in Rome, Italy.
Michael Phelps prior to Men’s 100 Meter Butterfly competition at USA’s 2016 Olympic Team Swimming Testing.