American Sha'Carri Richardson has delivered on her enormous promise, flying home from lane nine to win 100m gold in Budapest and denying pocket rocket Shelly-Ann Fraser-Pryce what would have been a record-equalling sixth world title.

Richardson claimed gold on Monday with a personal best of 10.65 seconds, having missed the 2021 Olympics over a positive test for marijuana. She failed to qualify for last year's world championships.

Shericka Jackson was second in 10.72, with fellow Jamaican Fraser-Pryce third in 10.77.

Richardson had to do it the hard way from the outside lane after missing the start in her semi-final and only just scraping into the gold-medal race.

But the 23-year-old was in no mood to discuss that issue or her previous major misses after her victory.

"I'm going to stay humble, I'm not back, I'm better and I'm going to continue to be better," she said.

"Never give up, never allow media or outsiders to define who you are. Always fight. This journey for me since I became a professional is, no matter what happens, you never lose sight of yourself.

"You'll have good days and bad days but you always have tomorrow."

Fraser-Pryce had been looking to equal the world championships record of the great Ukrainian Sergey Bubka, who won six pole vault titles.

But the Jamaican's 15th world championships medal - and first bronze - means she now has one more than her legendary countryman Usain Bolt.

"Usain is in a category by himself. For me it's just about showing up and competing," said the 36-year-old Fraser-Pryce.

"Given the circumstances of how I started the season - not bad.

"Being a champion is not all about winning. I'm grateful to have another medal to add to the tally. I won't be running the 200, I'll rest for the 4x100 relay."

Richardson was the first American woman to win the 100m world title since the late Tori Bowie in 2017.

There was more joy for the US squad in the men's 110m hurdles final as Grant Holloway claimed a third successive world title in 12.96, matching the record of compatriot Greg Foster.

Olympic champion Hansle Parchment from Jamaica was second in 13.07.

Hugues Fabrice Zango from Burkina Faso won triple jump gold with a best of 17.64 metres.