Britain's Josh Kerr produced a devastating last lap to seal a dominant victory in the men's 1 500m at the Ultimate Championship in Budapest on Sunday.
Kerr, fresh from setting a new world record in the mile, hit the front with 300 metres to run.
The 2023 world champion held his nerve to hold off a surge by Australia's Cameron Myers to clock 3min 29.35sec to walk away with the winner's cheque for $150 000.
Diamond League winner Myers, 20, came in second, at 0.33sec.
A trio of Americans followed: Hobbs Kessler, Olympic champion Cole Hocker and Yared Nuguse, Olympic bronze medallist.
"I didn't feel amazing during the warm-up, but I knew I could do it. This prize money is absolutely incredible," said Kerr. "I just didn't want to push too early.
"The rhythm of the race made the most sense for me – someone else pushed in the front and I managed to push hard in the finish.
"I didn't race a lot this season so I kind of came here fresh and ready to go."
Kerr was full of praise for Myers, calling the Australian an "awesome athlete".
"He was pushing a lot but I managed to look at the screen and see what the gap was," the Scot said.
"In the last two laps the gap was changing and I knew I had him. Sometimes you've got to dig a bit deeper in order to win or set a world record.
"In the last two weeks I pushed myself a bit and I knew I had been working hard. This sport has moved on in the last couple of years and I'm impressed where it is now."
PERFECT RACE
A fast start in front of a sell-out 20 000-strong crowd saw Germany's Robert Farken surge to the front.
The US pair of Hocker and Ethan Strand were on his tail as Kerr, wearing sunglasses, bade his time towards the back.
Nuguse moved to the front of the pack, with Kerr also moving up through the field and third at the bell for the final lap behind the American and Farken.
Kerr made his move down the back straight, hitting the front with 300 metres to run.
Myers was sucked through on his coattails, but the Briton had enough to see off the 20-year-old.
"I ran the perfect race I could have run. I thought with 200m to go that I was going to win and that is an exciting feeling," said Myers.
"Josh was just too strong today and that shows why he is a world record holder. I raced tactically perfectly and I was just beaten by a stronger runner, so that is how it goes."
One notable absentee from the race was Norway's Jakob Ingebrigtsen, who won the 5 000m here but withdrew from the 1 500m.
Ingebrigtsen's rivalry with Kerr had been ramped up after the Norwegian criticised the Briton for skipping last month's European championships in Birmingham, suggesting it was "ruining the sport" if athletes avoided each other.
Kerr refused to directly address the Norwegian's criticism, saying he was "not a robot".