The athlete who perhaps best summed up the meaning of track’s new experiment, the Ultimate Championship, isn’t an ultimate champion herself.

Sha’Carri Richardson picked up speed down the stretch and turned her opening run in Tokyo into a season-best.

Julien Alfred cruised in her opening-round heat of the 200 meters the morning after the sprinter from St. Lucia won the Olympic 100.

Jamaican sprinter Shericka Jackson pulled out of the women’s 200 meters and will not race for an individual medal at the Paris Olympics.

Sha’Carri Richardson’s comeback story hit a brick wall Saturday when Julien Alfred romped to the 100-meter title in 10.72 seconds to blow away the field and bring the first-ever Olympic medal to her island country of St. Lucia.

Sha’Carri Richardson makes her long-awaited Olympic debut as track and field events rev up Friday at the Paris Olympics.

Elaine Thompson-Herah, the two-time reigning Olympic champion at 100 and 200 meters, will miss the Paris Games because of what she said is a small tear in her Achilles tendon.

Noah Lyles won the 200-meter world title in 19.52 seconds, becoming the first man to complete the 100-200 sprint double at worlds since Usain Bolt did it for the third and final time back in 2015.

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.

American Sha’Carri Richardson won the women’s 100-meter world title.

Noah Lyles captured the 100-meter world championship by finishing in 9.83 seconds for a victory that reshuffled the deck for next year’s Olympics and cements him as the world’s No. 1 sprinter.

The U.S. women pulled a shocking upset in the 4-by-100 relay at world championships while the men finished second after a sloppy baton exchange that has become a ritual for that star-crossed team.

Jamaica's Shericka Jackson is now a world champion after a mistake led to an early exit at the Tokyo Games.

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

Noah Lyles celebrated his 25th birthday by running the fastest time in 200-meter qualifying at world championships, a 19.98-second romp that he punctuated by playfully wagging his finger at the six other sprinters straggling behind.

Allyson Felix has “no regrets” after a seventh-place finish in the 200 meters of what was likely her final Diamond League meet.

Sha’Carri Richardson is set to compete again after missing the Tokyo Olympics because of a positive marijuana test.

There were no such problems for her two compatriots in the 100m clean sweep as Elaine Thompson-Herah and Shelly-Ann Fraser-Pryce advanced safely through.

Jamaican women have now won the last four Olympic golds in the 100m.

Elaine Thompson-Herah broke Florence Griffith Joyner’s 33-year-old Olympic record in the women’s 100 meters.