"I am feeling great right now and as far as I am concerned, I'll be continuing on to Tokyo 2020. I'm not done yet, I can assure you," she said.

Darya Klishina, one of the Russian athletes competing as authorised neutral athlete, took silver in a season-best 7 meters and another American Tianna Bartoletta finished third in 6.97.

"I was waiting many years (for 7m). I wanted to show this result in an Olympic Games, but I did not have a chance with the whole situation around me. Now it was the right time, at a world championships, to jump this," said Klishina who became the only Russian that was allowed to compte in athletics at Rio Olympics as the entire Russian athletics team were banned amid raging doping controversies.

"I was enjoying this championships and it was without any nerves -- for the first time in my life. It was good for me and I could be focused on just my result," she said.

In the women's 3,000 steeplechase, Olympic bronze medalist Emma Coburn of the United States cut nearly four seconds off the Championships record en route to winning in 9:02.58, beating the previous Championships record of 9:06.57 set by Russia's Yekaterina Volkova back in 2007.

The 26-year-old Coburn waited patiently behind world record holder Ruth Jebet of Bahrain and three Kenyan athletes, including defending champion Hyvin Kiyeng Jepkemoi, for most of the race, before charging for the lead together with her teammate Courtney Frerichs in the final lap.

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