Fast: US swimmer Michael Phelps competes in the men's 200m butterfly semi-final swimming event at the London 2012 Olympic Games on July 30, 2012 in London - AFP Getty Images - via DailyMail
Michael Phelps - Butterfly 01 - YouTube
Chad le Clos wins gold at the 2012 Olympics just beating his hero, Michael Phelps, in the 200m butterfly
Santa Clara International Grand Prix - Day 2 Pictures
USA Swimming presents Swim Fast Butterfly with Michael Phelps and Bob Bowman P3 - YouTube
Michael Phelps - "No se le puee poner limite a algo, cuanto más sueñes más lejos llegaras"
#RIO2016 #TOPSHOT USA's Michael Phelps competes in the Men's 200m Butterfly Semifinal during the swimming event at the Rio 2016 Olympic Games at the Olympic Aquatics...
Michael Phelps' son Boomer makes a splash on Instagram as swimmer prepares for Rio Olympics | Daily Mail Online
Why Phelps is a Gold Medal Machine - he is flipper man. #butterfly #swimming #olympics
USA's Michael Phelps holds his son Boomer after he won the Men's 200m Butterfly Final during the swimming event at the Rio 2016 Olympic Games at the...