Michael Phelps won his 19th Olympic gold medal as the United States won the 4x100 relay at the Olympics on Sunday. The Americans’ traditional rival in the event, France, was second, and Australia third. 
The gold was Phelps’s 23rd medal: 19 golds, 2 silvers and 2 bronzes. The final time was 3:09.92. 
Phelps swam the second leg for the Americans, taking over from Caeleb Dressel in second place behind France and swimming into the lead. His split time was 47.12, which his coach Bob Bowman said was one of his all-time fastest. 
Phelps retired after the 2012 Games but decided to return in part because of disappointment with how the American men swam in the 4x100 relay at the 2013 world championships, losing to France. 

Source : QNA