Armand Duplantis wrapped up the World Athletics Championships in Eugene in stunning fashion on Sunday, setting a new world record in the pole vault as the curtain came down on the 10-day global track and field extravaganza.

The gripping finale could not have been any better scripted for the first world championships ever to be held on American soil -- apart from the fact maybe that the US-born and raised Duplantis was wearing the yellow and blue of Sweden and not representing the Stars and Stripes.

And the 22-year-old Swede did not disappoint, sailing with ease over 6.21 metres at the second time of asking.

The packed, raucous crowd at Hayward Field went wild as Duplantis sprinted to see his father and coach Greg and plant a kiss on girlfriend Desire Inglander.

"It is great, I cannot complain!" said Duplantis, whose new mark bettered by 1cm his previous best set when winning gold at the World Indoor Championships in Belgrade in March.

It was his fifth world record, and third this year.

"Actually, I did not think about the record that much today," he said.

Unheralded Nigerian Tobi Amusan had earlier stolen the show with two electric runs on her way to gold in the 100m hurdles.

In the very first event of a loaded evening of track, people had barely had chance to sit down with their sodas and popcorn before Amusan rocketed to a new world record of 12.12 seconds in the semi-finals.