The history books will say U.S. runner Rai Benjamin won the 400-meter hurdles at the world championships in a season-best 46.52 seconds in Tokyo, a year after his Paris Olympic gold.

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.

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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.

Norway’s Karsten Warholm powered to victory in the 400-meter hurdles, then put on his trademark Viking horns to celebrate his third victory at the world championships.

Team USA defended their 4x400 gold medal in spectacular fashion on Friday.

American sprinter Rai Benjamin shattered the previous world record by more than three-quarters of a second. But he wasn't first to the finish line in the most incredible 400m hurdle race you've ever seen.

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.

In one of the greatest hurdling races in history, Karsten Warholm of Norway obliterated his own world record by three-quarters of a second while Rai Benjamin broke a 29-year-old American record.

The duo ran well within their limits under slightly cloudy conditions, but it was still enough to top their individual heats.

All three became their respective events' No. 2 athlete of all time, with Benjamin and Holloway both coming tenths of a second away from breaking world records.