Nigerian sprinter Blessing Okagbare has been banned for 10 years for doping in the lead-up to the Tokyo Olympics and refusing to co-operate with the investigation.
The 32-year-old, who has also won world championship medals in the 200m and the long jump and is competing in her fourth Olympics, had comfortably won her 100m heat in Tokyo on Friday with a time of 11.05 seconds, qualifying for Saturday's semi-final.
With one giant leap Brittney Reese again rose to the occasion and became the first woman to win three long jump titles at the world championships in Moscow on Sunday.
Brittney Reese unleashed the beast in one giant leap to become the first woman to win three long jump titles at the world championships on Sunday.
Olympic champion Mo Farah won his second gold medal at the World Athletics Championships when he triumphed in the 5000 metres in Moscow, on Friday.
Summary of sports events and persons who made news on Saturday
Caster Semenya put aside the controversy over a planned rule change in athletics regarding hyperandrogenism to win the women's 1,500 metres
Jamaica's Shelly-Ann Fraser-Pryce rallied to claim an unprecedented third world championship 100 metres title in 10.76 seconds at the Bird's Nest stadium on Monday.
Dina Asher-Smith seized her golden opportunity to win the World Championship 200 metres on Wednesday and become the first British woman to claim a global sprint title.
Olympic champion Usain Bolt sent out a warning to his rivals ahead of the world championships by running the fastest time of the year to win the 200 metres at the Paris Diamond League on Saturday.