Olympic legendary swimmer, Michael Phelps, on Tuesday, added his 20th and 21st Gold to his tally of Olympic Gold medals.

The American won Gold as he triumphed in the 200m butterfly and the 4x200m freestyle relay.

According to reports, the 31-year-old powered home to win the 200m butterfly in a time of 1:53.36 to avenge his London defeat rival, Chad le Clos while USA took gold in the 4x200m freestyle relay.