Mo Farah smashed the European 10,000 metres record in winning the Prefontaine Classic at the Eugene Diamond League meeting in Oregon.
The Londoner's time of 26 minutes 46.57 seconds broke Belgian Mohammed Mourhit's European benchmark of 26:52.30 set in 1999, while also eclipsing Jon Brown's 13-year-old British record of 27:18.14.
Farah's career-best display saw him finish just ahead of Imane Merga of Ethiopia, who had a time of 26:48.35, his own personal best.
"I just sat at the back and worked my way through the field," said Farah, whose previous fastest time was a 27:28.26 set last year.
"This is definitely a special track.
"If it wasn't for the crowds I would never have done this. With three laps to go I knew I had the chance for the record."
Looking ahead to the world championships in Daegu starting in August, he added: "I want a world medal and it's shown here if I keep working hard I'll be in the mix."
Farah has been building momentum of late, also winning the BUPA London event over 10,000m in 29:15 on Monday.