Kenya's Timothy Cheruiyot ran a season's best in the 1500m to clinch gold at the sixth IAAF Diamond League meeting of the season in Stockholm.
The 21-year-old, who finished seventh at the 2015 World Championships, is looking in prime shape ahead of the 2017 event in London.
His time of 3:30.77 was well ahead of Bahrain's Alsadik Mikhou (3:31.49) and Aman Wote of Ethiopia (3:31.63). Fellow Kenyan Asbel Kiprop, the winner at the 2015 World Championships, was fourth, also in a season's best 3:33.17.
It was gold again in the long jump for South African superstar Luvo Manyonga, despite the windy conditions in the Swedish capital. His 8.36m on his first jump proved enough, with compatriot Ruswahl Samaai (8.29m) finishing second ahead of Radek Juska (8.09m).
Cote d'Ivoire sprinter Ben Youssef Meite managed silver in the 100m, but he was well off the pace set by Andre De Grasse. The Canadian ran an incredible 9.69, though it was annulled from the records because of a monstrous 4.8m/s back-wind, way over the allowed 2.00m/s.
The time was more than 0.2 better than De Grasse's personal best, and he admits being in shock when seeing the time as he crossed the line: "It was a shock to me when I saw the time on the board, I just wanted to run sub-10 and I didn't feel in the shape to run that fast."
Meite finished in a time of 9.84, 0.05 better than Jamaica's Ryan Shields in third.
In the absence of South African juggernaught Caster Semenya, Burundi's Francine Niyonsaba - silver medalist at the 2016 Olympic Games - won the 800m in a time of 1:59.11. She finished well ahead of Sweden's Lovisa Lindh (1:59.41) and Switzerland's Selina Buchel (1:59.66).
Botswana's rising star Baboloki Thebe, who took gold in the 400m in Oslo four days ago, had to settle for silver this time around with a time of 44.99. He was beaten to the post by Steven Gardiner of The Bahamas, who clocked a winning time of 44.58.
Other Africans to shine was Murielle Ahoure of Cote d'Ivoire, who claimed gold in the 200m (22.68), and Morocco's Soufiane El Bakkali, who won the 3000m steeplechase (8:15.01). Yemane Haileselassie of Eritrea finished second (8:18.29), ahead of Kenya's Nicholas Kiptanui Bett (8:21.98).