Sweden's Armand Duplantis and Nigeria's Tobi Amusan have both set world records on the final day of the World Athletics Championships in Eugene, Oregon.
Duplantis broke his men's pole vault world record with a clearance of 6.21 metres on the way to winning his first world championships gold medal.
The Olympic champion cleared 6.00m to make sure of the title before setting a championship record of 6.06m, edging Australian Dmitri Markov's mark of 6.05m set in Edmonton in 2001.
The 22-year-old then moved his sights on his own world record of 6.20m set at the world indoor championships in Belgrade earlier this year and improved upon it by 1 centimetre with his second attempt.
American Chris Nilsen jumped 5.94m to take silver on countback ahead of the Philippines' Ernest John Obiena.
Amusan won 100 metres hurdles gold in what was initially announced as a world record 12.06 seconds but later ruled ineligible as the wind speed exceeded the legal limit.
Amusan had earlier broken the world record by running 12.12 in the semi-finals.
She recovered from a slightly slower start to put on a pristine performance over the barriers, 0.17 seconds clear of silver medallist Britany Anderson of Jamaica.
Puerto Rico's Olympic champion, Jasmine Camacho-Quinn, was third in 12.23.
"The goal was to come out and to win this gold," Amusan said.
"I believe in my abilities but I was not expecting a world record at these championships. The goal is always just to execute well and get the win. So the world record is a bonus."
American Olympic champion Athing Mu added the world 800 metres title to her resume, as the 20-year-old showed experience beyond her years to cleverly squeeze out Briton Keely Hodgkinson in a breathless neck-and-neck finish.
Mu took the tape in 1:56.30, with Hodgkinson second in 1:56.38.
Kenya's Mary Moraa won the battle for bronze in a personal best of 1:56.71.
Jakob Ingebrigtsen made up for his 1,500m disappointment by winning the men's 5,000m gold in emphatic style.
Ingebrigtsen, the Olympic 1,500m champion, came home in 13:09.24 ahead of Jacob Krop (13:09.98) of Kenya, while Uganda's Oscar Chelimo (13:10.20) was third.
Sydney McLaughlin anchored the US to its third successive women's 4x400 metres relay world title in dominant fashion, with the host nation finishing well clear of Jamaica and Great Britain to win in 3:17.79.
The US led through a series of clean changeovers before McLaughlin, who shattered the women's 400m hurdles world record on Saturday AEST, brought it home for gold with a remarkable 47.91 final leg.
Allyson Felix, the most decorated woman in track, did not run in the final but earned a 20th World Athletics Championships medal after making a surprise return for the US in the preliminary round.
The US topped the overall medal tally with 33 podium finishes, a total including 11 gold.
Reuters
