South African athletes Tshepo Tshite and Dominique Scott-Efurd produced solid performances although they did not make the podium at the second leg of the Diamond League series in Doha on Friday night.
National 800m champion Tshite finished sixth in the men's two-lap race in a season's best of 1:45.54. Kenyan athlete Wycliffe Kinyamal, who is the reigning Commonwealth Games champion, secured a convincing victory in 1:43.91.
In the women's 3 000m race, Scott-Efurd took ninth place in 8:51.39, also setting a season's best.
Former world junior 5 000m champion Beatrice Chebet of Kenya took the win in 8:27.49.
Meanwhile, Jamaican sprint star Shelly-Ann Fraser-Pryce raced to victory in the 100m in the run-up to the Tokyo Olympics.
The 34-year-old timed an impressive season's best of 10.84 seconds for the win, another important step in her quest to become the first female athlete to win three Olympic 100m golds after previously topping the podiums in 2008 and 2012 in Beijing and London respectively.
Doha is the second stop on the 13-leg Diamond League circuit, with now only five more elite meetings before the Olympic Games in Japan, which start on 23 July after being postponed for a year because of the coronavirus pandemic.
The third leg in the 2021 World Athletics Diamond League series will be held in Florence, Italy on 10 June.