Michael Phelps: SI's Best Photos from the 2016 Rio Olympics

Michael Phelps: SI's Best Photos from the 2016 Rio Olympics

Donald Miralle

Team USA's Michael Phelps and Caeleb Dressel celebrate after winning the 4x100m freestyle relay final.

Donald Miralle

Michael Phelps kisses his gold medal after winning the Men's 4x100m Freestyle Relay Final on Aug. 7, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps competes in the 200m Butterfly semifinals.

Donald Miralle

Michael Phelps dives at the start of the Men's 200m Butterfly Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps dives at the start of the Men's 200m Butterfly Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps competes in the Men's 200m Butterfly Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Robert Beck

Michael Phelps competes in the Men's 200m Butterfly Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps celebrates after winning the Men's 200m Butterfly Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Robert Beck

Michael Phelps celebrates with his mom, Debbie, and fiancee Nicole after winning the 200m Butterfly final.

Robert Beck

Michael Phelps kisses his gold medal after winning the Men's 200m Butterfly Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps swims to the wall to win the Men's 4x200m Freestyle Relay Final on Aug. 9, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Bob Martin

Michael Phelps competes in the Men's 200m Individual Medley Semifinals on Aug. 10, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps competes in the Men's 200m Individual Medley Semifinals on Aug. 10, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Robert Beck

Michael Phelps competes in the Men's 100m Butterfly Semifinals on Aug. 11, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Bob Martin

Michael Phelps laughs after tying for silver in the Men's 100m Butterfly Final on Aug. 12, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Bob Martin

Team USA's Michael Phelps leads Great Britain's James Guy in the Men's 4x100m Freestyle Relay Final on Aug. 13, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Michael Phelps competes in the Men's 4x100m Freestyle Relay Final on Aug. 13, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Jordan Murph

Team USA's Michael Phelps leads Great Britain's James Guy in the Men's 4x100m Freestyle Relay Final on Aug. 13, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Team USA's Michael Phelps reacts after winning his last race, the Men's 4x100m Freestyle Relay Final on Aug. 13, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.

Donald Miralle

Team USA's Ryan Murphy, Cody Miller, Michael Phelps and Nathan Adrian pose with their gold medals after winning the Men's 4x100m Freestyle Relay Final on Aug. 13, 2016 at the Olympic Aquatic Centre in Rio de Janeiro, Brazil.