Rai Benjamin has held off Letsile Tebogo on the anchor leg to give the United States men gold medal and an Olympic record in the men’s 4x400-meter relay at the Paris Games.

Sha’Carri Richardson won her first Olympic gold medal, bringing the American women from behind in the anchor lap to capture the 4x100 relay.

Norwegian world-record holder Karsten Warholm turned in the fastest time in 400-meter hurdles qualifying as he tries to defend his Olympic title.

Grant Holloway won U.S. track trials in the 110-meter hurdles Friday, finishing in 12.86 second to earn a chance to capture the Olympic title that eluded him in an upset loss three years ago.

Britain’s Josh Kerr pulled off the biggest upset of the world championships, outrunning heavily favored Jakob Ingebrigtsen of Norway to the line for a win in the 1,500 meters.

Karsten Warholm of Norway obliterated his own world record in the Olympic 400-meter hurdles Tuesday, finishing in 45.94 to crack the old mark by.