TOKYO — Elaine Thompson-Herah of Jamaica on Saturday repeated as the Olympic champion in the women’s 100 meters, outsprinting a field that included Shelly-Ann Fraser-Pryce, a two-time former champion.
Thompson-Herah finished in 10.61 seconds, breaking Florence Griffith-Joyner’s Olympic record by a hundredth of a second in a time that made her the second-fastest woman in history.
It was a Jamaican sweep of the medals: Fraser-Pryce took silver in 10.74, and Shericka Jackson won bronze.
Fraser-Pryce had been seeking her third Olympic gold in the event after winning back-to-back titles at the 2008 and 2012 Olympic Games. She won bronze in the 100 meters at the Rio Olympics in 2016, finishing behind Thompson-Herah and Tori Bowie of the United States.
On Saturday, Thompson-Herah edged ahead of Fraser-Pryce about halfway down the track and held her off, triumphantly raising her left arm as she crossed the finish line. She then fell to the track in apparent disbelief.
Teahna Daniels, the lone American in the race, finished seventh.
The final on Saturday was missing two notable figures: Sha’Carri Richardson, the U.S. champion, who is serving a monthlong suspension for testing positive for marijuana, a banned substance; and Blessing Okagbare of Nigeria, who was suspended by antidoping authorities on Saturday for testing positive for human growth hormone.
A deep pool of talent remained. Thompson-Herah seemed to send a message by winning her semifinal heat in 10.76 seconds, despite slowing a few meters from the finish.
Fraser-Pryce, meanwhile, came through her semifinal heat in 10.73. Both runners appeared primed for a showdown. They delivered.
The women’s 100-meter final was preceded by the first mixed-gender 4×400 relay in Olympic history. In a stunner, Poland won gold in a tight finish with the Dominican Republic in second, and the United States in third.
And in first-round heats of the men’s 100-meter dash, all three Americans — Trayvon Bromell, Fred Kerley and Ronnie Baker — made it through to the semifinals, though Bromell, one of the favorites to win gold, labored to a fourth-place in his heat and advanced based only on his time.