Jamaica’s Elaine Thompson-Herah wins the 100 meters in 10.54 at the 2021 Prefontaine Classic at Hayward Field in Eugene, Ore., on Saturday, Aug. 21, 2021. USA’s Sha’Carri Richardson, right, finished last.

Jamaica’s Elaine Thompson-Herah after winning the 100 meters at at the 2021 Prefontaine Classic.

Olympic champion André De Grasse of Canada celebrates his wind-aided 9.74 win in the 100 meters at the 2021 Prefontaine Classic at Hayward Field in Eugene, Ore., on Saturday, Aug. 21, 2021.

Olympic Champion Athing Mu signals victory in the 800 meters with a new 1:55.04 American record in the 800 meters at the 2021 Prefontaine Classic at Hayward Field in Eugene, Ore., on Saturday, Aug. 21, 2021.

Noah Lyles won the 200 meters in a world-leading and meet-record 19.52 ahead of Olympic silver medalist Kenny Bednarek, right, and brother Josephus Lyles at the 2021 Prefontaine Classic at Hayward Field in Eugene, Ore., on Saturday, Aug. 21, 2021.

Uganda’s Joshua Cheptegei beats his chest in celebration after his 8:09.55 win in the men’s two mile at the 2021 Prefontaine Classic at Hayward Field in Eugene, Ore., on Saturday, Aug. 21, 2021.

Sifan Hassan, Olympic champion in the 5,000 and 10,000 meters in Tokyo, watched the scoreboard replay on the track after she won the 2021 Prefontaine Classic 5K in 14:27.89 at Hayward Field in Eugene, Ore., on Friday, Aug. 20, 2021. Hassan had starting out the race trying to set a new world record, but that hope ran away from her about midway in the run.

Geordie Beamish pulled ahead of Craig Engels to take the men’s international mile with a time of 3:54.86. Engels finished second in 3:55.41 with Charles Philibert-Thiboutot finishing third in 3:55.48 at the 2021 Prefontaine Classic at Hayward Field in Eugene, Ore., on Friday, Aug. 20, 2021.