Caster Semenya was among a host of winners setting world-leading times and distances on Friday as the 2016 IAAF Diamond League got under way in Doha.

The South African claimed victory in the women’s 800m in 1min 58.26sec. It was a first Diamond League race win since 2011 for Semenya, who was forced to undergo gender testing after becoming the world 800m champion in 2009, then went on to take silver in the event at the London 2012 Olympics.

In the women’s 100m, the American Tori Bowie ran a world-leading 10.80, while her two closest rivals also achieved times faster than the previous fastest of the year, with the second-placed Dafne Schippers of the Netherlands clocking 10.83 and Jamaica’s Veronica Campbell-Brown 10.91 in third.

Campbell-Brown’s compatriot Omar McLeod improved his own world-leading time from 13.08 to 13.05 in the 110m hurdles.

Another track highlight was Ethiopia’s Almaz Ayana running 8min 23.11sec in the women’s 3,000m – the fastest time of 2016.

Great Britain’s Eilidh Doyle did the same in the women’s 400m hurdles (54.53), while Kenya’s world champion Asbel Kiprop won the 1500m in a world-leading 3:32.15.

There were also track victories for Ameer Webb in the men’s 200m and his fellow American LaShawn Merritt in the 400m.

The triple jump events saw world-leading marks set by the American world and Olympic champion Christian Taylor in the men’s competition – 17.23m, beating his own previous mark – and Colombia’s Caterine Ibargüen in the women’s (15.04m).