Madison Keyes defeated number one player Inga Sviatake.
American tennis star Madison Keyes defeated world number one Iga Swiatek 6-3 and 6-4 in the quarterfinals of the Western and Southern Open.
Two-time Grand Slam champion Sviatec has not progressed beyond the last 16 in four tournaments since winning the French Open in June.
Kees, who is ranked 24th in the world rankings, registered his first win in six matches against the top-ranked player.
She will now face Wimbledon champion Elena Ribakina, who defeated Alison Riske Amritraj 6-2 and 6-4.
Former US Open champion and 10th seed Emma Radukanu was defeated by Jessica Pegula 7-5 and 6-4. Two-time champion Petra Kvitova defeated fifth seed Ons Jabour 6-1, 4-6, and 6-0.
In the men’s section, top seed Daniil Medvedev defeated Denis Shapovalov 7-5 and 7-5 to reach the quarter-finals.
He will now face 11th seed Taylor Fritz, who defeated sixth seed Andrei Rublev 6-7, 6-2, and 7-5.
US Open champion will get 26 million dollars, total prize money is 60 million dollars.
The US Open singles champion will get $2.6 million this year, while the grand slam starting on August 29 has total prize money of $60 million for the first time.
The American Tennis Association said on Thursday that a player entering the main draw would receive $80,000 while reaching the second round would receive $121,000.
Before the Corona epidemic, in 2019, the champion used to get $39 million and the loser in the first round was given $ 58000.
Those reaching the quarter-finals will get $ 445,000 and those who play the semi-finals will get $ 705,000. The runner-up will be given $1.3 million.
Last time the total prize money was $55 million. This year the prize money in the Australian Open was $52 million, while the prize money in Wimbledon and French Open was about $49 million.