Allyson Felix, who announced her retirement after winning 4x400 metres mixed relay bronze on the opening day of the World Athletics Championships in Eugene, has been persuaded to turn out for the United States women’s 4x400m relay team in the heats scheduled for the second session on day nine.

Five reigning Olympic champions from four different continents underlined the global nature of athletics as they won gold on day four of the World Athletics Championships in Eugene.

Shelly-Ann Fraser-Pryce ran a World Championship record of 10.67sec to retain her women’s 100 metres world title in Eugene, leading a Jamaican clean sweep of medals the day after the hosts had won gold, silver and bronze in the men’s race.

Renowned American sprint coach Rana Reider, who is under investigation for sexual misconduct, has been cautioned by police in Eugene after gaining unauthorised access to the athlete warm-up area at the World Athletics Championships.

Fred Kerley led a United States clean sweep of the men’s 100 metres medals on day two of the World Athletics Championships in Oregon, clocking 9.86sec to finish ahead of compatriots Marvin Bracy and Trayvon Bromell, who took silver and bronze, respectively, in 9.88.

Ferdinand Omanyala, Africa’s fastest 100 metres runner, is due to arrive in time - just - to compete at the World Athletics Championships Oregon22 after overcoming visa hold-ups.

The World Athletics Council is set to discuss the ongoing suspension of the Russian Athletics Federation (RusAF) at its meeting prior to the World Championships in Eugene.

Russian athletes have been banned from competing at the upcoming Oregon22 World Athletics Championships.

Ukraine's London 2012 4x400 metres bronze medallist Anna Ryzhykova and Ugandan 800m world champion Halimah Nakaayi are among 12 nominations for six available places on the World Athletics Athletes’ Commission.

Sydney McLaughlin lowered her own women’s 400 metres hurdles world record to 51.41sec on the third day of the USA Track and Field (USATF) Outdoor Championships at Hayward Field in Eugene - the trials for next month’s World Athletics Championships at the same venue.