Kenya's Mary Moraa skipped over the line in joy as she won the women's 800 metres world title in Budapest on Sunday and ended Athing Mu's dominance of the event.
The 23-year-old timed a personal best 1min 56.03sec with Britain's Keely Hodgkinson having to settle for silver like last year, as she finished in 1:56.34.
Mu, the Olympic and defending world champion who has rarely raced this year, finished third in 1:56.61.
The tall Mu had led from the start with Moraa and Hodgkinson keeping tabs on her.
Moraa, though, was the one who was able to keep with the 21-year-old American phenomenon, while Hodgkinson decided to drop off the pace as they heard the bell.
Mu moved up a gear down the back straight but Moraa would not let go and as they rounded the bend she was on her shoulder.
Mu still held the lead but as Hodgkinson made her charge down the inside it was Moraa on the outside who got ahead of the American with 30 metres to go.
Hodgkinson also passed Mu but it was too late for her to get gold.
Moraa had the edge and added the title to the Commonwealth Games gold she won last year.
She lay on the track for a few seconds before getting to her feet and dancing in celebration — and her Kenyan teammates on the training track did the same.
"I am pleased to get the gold this time and become the world champion," said Moraa.
"After bronze last year I wanted to improve and I have. "Everyone in the final was so fast I knew I would have to have a fast finish.
"I came from a long way behind but I managed to do it."