Jil Teichmann, a wildcard for the event, defeated Olympic champion Belinda Bencic in straight sets at the Cincinnati Masters ©Getty Images

World number 76 Jil Teichmann continued her sensational run at the Cincinnati Masters by beating Olympic champion Belinda Bencic in an all-Swiss quarter-final.

The wildcard stunned second seed Naomi Osaka of Japan yesterday.

Teichmann stormed to a 6-3, 6-2 victory over Bencic, ending her compatriot's nine-match winning streak which included winning gold at the Tokyo 2020 Olympics earlier this month.

"We hugged before the match; we hugged after the match," said Teichmann.

"We know that once we step on court it's business, it's just another player I have to deal with, and she had the same mindset.

"At the beginning it's obviously a bit special, but once we're in it, we just look at the game, not looking at the opponent, or at least I do that way."

Teichmann is now set for a semi-final clash with Karolína Plíšková of the Czech Republic who benefitted from an injury to her opponent.

Plíšková was leading 7-5, 2-0 when Spain’s Paula Badosa retired from the match due to a right shoulder injury.

Top seed Ashleigh Barty of Australia came out on top in the battle of the reigning Grand Slam champions with victory over Barbora Krejčíková of the Czech Republic.

Krejčíková, who clinched this year’s French Open, lost 6-2, 6-4 to the Wimbledon winner who is looking to add to her trophy cabinet.

Top seed Daniil Medvedev dropped just two games in his victory over Pablo Carreno Busta ©Getty Images
Top seed Daniil Medvedev dropped just two games in his victory over Pablo Carreno Busta ©Getty Images

Barty will meet the unseeded and resurgent Angelique Kerber in a reprise of the Wimbledon semi-finals.

The German moved through after 11th seed Petra Kvitová was forced to retire trailing 6-3, 3-3.

In the men’s event, second seed Stefanos Tsitsipas of Greece overcame the disappointment of letting two match points slip in the second set to beat Felix Auger-Alliassime of Canada 6-2, 5-7, 6-1.

"Tennis is a psychological game and things like this happen," said Tsitsipas.

"It’s important to just stick to your roots and what you are doing best.

"It might not have been ideal in the second set, especially when I made so many opportunities and had such a good opportunity to close it a bit earlier. 

"But with a lot of patience and just trying to find that opportunity in the third set, I was stepping in, I was really determined and I didn’t let go."

The victory sets up a blockbuster semi-final tussle with Germany’s Alexander Zverev.

The Olympic champion produced a superb display to thump Norway’s Casper Rudd 6-1, 6-3.

The other semi-final sees two Russians go head-to-head for a place in the final.

Top seed Daniil Medvedev took less than an hour to defeat Spain’s Pablo Carreno Busta with a 6-1, 6-1 triumph, while Andrey Rublev beat France’s Benoit Paire 6-2, 3-6, 6-3.