Hassan breaks women's mile world record
Sifan Hassan broke the long-standing women's mile (1,609 metres) record in four minutes, 12.33 seconds at the Herculis Diamond League meeting on Friday (Saturday AEST).
The Dutchwoman fractionally beat the 4:12.56 set in 1996 by Svetlana Masterkova, a two-time Olympic champion that year in Atlanta.
Hassan knocked two seconds off her personal best and finished five seconds clear of Britain's Laura Weightman.
She reached the 1,200-metre mark in 3:10.2 and pushed hard to clock a 62-second closing lap at Stade Louis II in Monaco.
Hassan was surprised, but thinks this result stands her in good stead for the world championships in Doha, Qatar in September.
"When I crossed the line I was so surprised. After you run the last 400 like that and set a world record, it gives me (you) much confidence over 5,000 ... I want to double over 1,500 and 5,000 in Doha," she said
In the men's 100 metres, there was another win for world champion Justin Gatlin.
The 37-year-old Gatlin clocked 9.91 seconds to narrowly beat Noah Lyles in 9.92 - Gatlin's winning time last week at the Athletissima Diamond League in Lausanne.
Michael Rodgers made it a United States podium sweep with 10.01 for third, having run the same time in Lausanne.
In other men's results, Steven Gardiner of the Bahamas won the 400 metres in 44.51 seconds; Nijel Amos of Botswana clinched the 800 in 1:41.89 - the world-leading time this year - and Moroccan runner Soufiane El Bakkali won the 3,000 steeplechase in 8:04.82, another best for the year.
Poland's Piotr Lisek also had a year-leading 6.02 metres in pole vault and Germany's Andreas Hofmann won the javelin throw with 87.84 metres.
Christian Taylor won the triple jump in 17.82 metres, while fellow American Sydney McLaughlin (53.32 seconds) won the women's 400 hurdles.
Meanwhile, countrywoman Kendra Harrison (12.43) won the women's 100 hurdles and Shaunae Miller-Uibo secured another victory for the Bahamas, this time in the 200 metres.
Two-time defending world champion Mariya Lasitskene of Russia, competing as a neutral athlete, won the high jump with two metres.