Mo Farah laid down a marker to his rivals with a superb 5,000m victory in the Prefontaine Classic as triple jump king Christian Taylor edged ever closer to his dream of a world record leap.
Farah, the four-time Olympic champion who is embarking on his final season of track racing, clocked the fastest time of the year after romping home in 13min 00.70sec at Eugene's Hayward Field in Oregon.
The 34-year-old British distance running king, who completed a 'double-double' of 5,000m and 10,000m gold at last year's Olympics, said he had been determined to send a message to his challengers as he builds towards his farewell at the World Championships in August.
"For me it wasn't about time. It was just a matter of telling the boys 'Look, I'm ready'," Farah said.
"A lot of the boys talk a lot. I just want my running to do the talking and get on with it."
Farah's brilliant tactical victory was one of seven world leading performances set across a high quality day of action.
The display of the day came from US triple jump king Taylor, the two-time Olympic and world champion who recorded the third longest leap in history, 18.11m, to win a duel with compatriot Will Claye, who was second with 18.05.
Taylor, 26, is now within striking distance of Jonathan Edwards' 1995 world record of 18.29m. Afterwards, Taylor admitted pursuit of Edwards' record was his main motivation.
"It's the only reason I'm here," he told AFP. "I've got two Olympic titles, two world titles, the American record, I've been blessed beyond belief.
"The only thing that kills me now is that I'm number two all-time. And nobody will remember number two. And that's what's pushing me every single day," he added.