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.

Noah Lyles pulled ahead of Kenny Bednarek heading into the straightaway then held him off down the stretch to capture his fourth title in a much-awaited 200 meters at the world championships.

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

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.

British 1,500-meter champion Jake Wightman was in disbelief after he crossed the finish line.

From Simone Biles to Mutaz Essa Barshim and Gianmarco Tamberi, there's an evolution happening at the Olympics.

Simone Biles returned to competition at the Tokyo Games on Tuesday and won a bronze medal in the balance beam.

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 Jamaican sprinter and her Olympic-record time captured everyone’s attention.

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

The so-called playbook for athletes at the Tokyo Olympics provides a guide to a “safe and successful Games."

The two-time reigning world champion took down Kevin Young's 1992 mark at a Diamond League meet in front of a home crowd in Oslo, Norway.