Michael Phelps Medals List: 21 Swimming Medals, 17 Golds and Counting

Michael Phelps' medals are so abundant he will need to buy a new trophy cabinet when he gets home. The most decorated Olympian in history earned another Olympic medal on Friday taking his tally to 21 medals in total.

(Photo: Reuters/Michael Dalder)Michael Phelps of the U.S. swims to a fourth place finish in the men's 400m individual medley final during the London 2012 Olympic Games at the Aquatics Centre July 28, 2012.

However, amazingly Phelps is still not completely finished; he has one final Olympic swimming race on Saturday in the 4x100 Meter Medley Relay.

Phelps has confirmed that this will be his final appearance in any Olympic Games as he will not attend the 2016 Olympics in Rio de Janeiro.

Although, the extraordinary achievement by Phelps was not entirely unexpected, has still left everyone amazed at his unprecedented achievement.

Many felt that Phelps would show his age at London 2012 and would be outshone by American teammate Ryan Lochte. However, although there have been clear signs that he is not at his 2008 Beijing peak, he is still the most successful swimmer at the Games once again.

For the London Games, Phelps originally stated he would never do eight events again. However, at the 2012 United States Olympic Trials, the qualifying meet for the 2012 Summer Olympics, Phelps qualified in the same eight events that he swam in Beijing. But he did indeed later drop the 200 meter freestyle from his program, as he stated he wanted to focus on the 4×100-meter freestyle relay.

On Saturday Phelps will be looking to add a 22nd Olympic medal to his collection in the 4x100 Meter Medley Relay. Below is a look at the medals he has won so far which make him the most decorated Olympian of all time:

2004 Olympic Games in Athens
Gold 100 m butterfly - 51.25 (OR)
Gold 200 m butterfly - 1:54.04 (OR)
Gold 200 m individual medley - 1:57.14 (OR)
Gold 400 m individual medley - 4:08.26 (WR)
Gold 4×200 m freestyle - 7:07.33 (NR)
Gold 4×100 m medley - 3:30.68 (WR)
Bronze 200 m freestyle - 1:45.32 (NR)
Bronze 4×100 m freestyle - 3:14.62

2008 Olympic Games in Beijing
Gold 100 m butterfly - 50.58 (OR)
Gold 200 m butterfly - 1:52.03 (WR)
Gold 200 m freestyle - 1:42.96 (WR)
Gold 200 m individual medley - 1:54.23 (WR)
Gold 400 m individual medley - 4:03.84 (WR)
Gold 4×100 m freestyle relay - 3:08.24 (WR)
Gold 4×200 m freestyle relay - 6:58.56 (WR)
Gold 4×100 m medley relay - 3:29.34 (WR)

2012 Olympic Games in London
Gold 100 m butterfly - 51.21
Gold 200 m individual medley - 1:54.27
Gold 4×200 m freestyle relay - 6:59.70
Silver 200 m butterfly - 1:53.01
Silver 4×100 m freestyle relay - 3:10.38