LONDON -- American sprinter Ronnie Baker won the 100-meter final at the Anniversary Games on Saturday after compatriot Christian Coleman pulled out of the event.
Coleman, who won silver at worlds last year, withdrew with a hamstring injury. The 22-year-old American was the race favorite but suffered a problem in the warm-up at the Diamond League meet.
Baker won in 9.90 seconds. Zharnel Hughes was second in 9.93, Commonwealth champion Akani Simbine of South Africa was third, and Jamaica's Yohan Blake was fourth.
Tom Bosworth improved his own walking world record as he avoided a race-ending third caution at the London Stadium to clock 10 minutes, 43.09 seconds in the 3,000 meters.
The 28-year-old British walker was yellow-carded twice.
Bosworth won silver in the men's 20-kilometer race walk at the Commonwealth Games in April, having been disqualified at the world championships last summer.
World champion Karsten Warholm used the absence of Qatar rival Abderrahman Samba to finally win a 400-meter hurdles in a Norwegian record 47.65.
Warholm was runner-up to Samba in the previous Diamond League meetings in Rome, Oslo, Stockholm, Paris and Lausanne. But Samba preferred to try the 400 without hurdles at London Stadium and registered a personal best in coming fifth. Abdalelah Haroun won the 400 in a Qatar-record 44.07.
Shelly-Ann Fraser-Pryce was first in her heat and went on to win the women's 100 final in a season-best 10.98, ahead of second-place Dezerea Bryant of the United States in 11.04.
The Jamaican, a two-time Olympic champion, had a baby boy in August.
"I haven't raced for ages, and I'm happy that the run today was under 11 seconds," Fraser-Pryce said. "Being a mother is my first priority, and to come back and be flexible with my training is wonderful and I'm so excited about next year now."
Olympic silver and world bronze medallist Paul Chelimo of the U.S. edged the 5,000 from Ethiopian duo Edris Muktar and Yomif Kejelcha.
World pole vault champion Sam Kendricks of the U.S. cleared 5.92 meters to hold off Renaud Lavillenie and Armand Duplantis.
Shara Proctor of Britain won the women's long jump, and world bronze medalist Lye Huihui of China won the javelin.