Commonwealth and African champion Eunice Sum sealed her first win of 2015 in a slow 2:00.28 to put her on track to defend the Diamond Race trophy.
Chased hard by compatriot and mentor Janet Jepkosgei, who won 14 800m races last year, Sum strode away from the field of two runners to win by almost half a second.
However Morocco’s fast-finishing Malika Akkaoui stole through on the inside lane for second in 2:00.73 while Jepkosgei held on for third, the 2007 world champion clocking 2:01.14 ahead of USA’s World Relay gold medallist Molly Ludlow.
There was also World leads by Silas Kiplagat in the men’s 1500m, as did Jairus Birech in the 3000m steeplechase.
The 1500m wasn’t as fast as expected but Silas Kiplagat hit the front with 200m remaining and held on for victory in a 3:35.29 world-lead.
Nixon Chepseba took over the lead after 800m and produced a 56.34 third lap. The leader’s split for the last 300m was 41.73, but Kiplagat would have been a tick or two quicker.
Less than a second covered the first eight finishers, but there was never any doubt about the winner. Birech who dominated on the Diamond League last year started his season in excellent shape! 8:05.37 to win the ‘chase.
Birech dominated the steeple after Haron Lagat and Bernard Nganga had taken him through 2000m in 5:38.22.
By that stage, he was decisively clear of Paul Kipsiele Koech in second place. At the bell, Birech was still nominally a chance for something near eight minutes, but he could not find the extra speed required. He won in 8:05.36 from Koech (8:11.39) and Conseslus Kipruto (8:14.59).