Norway's flying Ingebritsen brothers have taken down a stacked Kenyan team in an inter-continental 2000m team race named in honour of Australian athletics official Maurie Plant.
The five-man Norwegian squad including Jakob, Filip and Henrik Ingebritsen were competing in Oslo, while the Kenyan squad headed by reigning 1500m world champion Timothy Cheriuyot were racing in wet and windy conditions at altitude in Nairobi.
Jakob Ingebritsen broke the European 2000m record with a time of four minutes 50.01 seconds.
The top three times from each team were collated to determine the winners of the Maurie Plant Memorial Race.
Plant, who passed away in January aged 66, was a much-loved member of the international track and field fraternity.
He was a fixture over many years at the annual Bislett Games held in the Norwegian capital.
In other action at the Diamond League exhibition event on Thursday night featuring odd distances and remote competition, local favourite Karsten Warholm set a 300m hurdles world best of 33.78 seconds.
Sweden's world record holder Armand Duplantis won the men's pole vault with 5.86m.
Duplantis was competing in Oslo, while second-placed Renaud Lavillenie (5.81m) was jumping at home in France.
With the season's first six Diamond League events postponed due to the coronavirus outbreak and many athletes still unable to travel, the Oslo meet was the first attempt to salvage something from a year that has also seen the Tokyo Olympics postponed until 2021.