US OPEN WOMEN'S SINGLES- Kerber outplays Kvitova, Wozniacki knocks out Keys, Sevastova stuns Konta

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Tennis- Australian Open champion, World No.2 Angelique Kerber, former World No.1, 2-time US Open finalist Caroline Wozniacki stunned eighth seed, last American left in the bottom half of the draw, Madison Keys, last year's finalist Roberta Vinci outplayed Ukraine's Lesia Tsurenko whereas unseeded Latvian Anastasija Sevastova defeated 13th seed Johanna Konta to reach Quarterfinals of the 2016 US Open.

Germany's Kerber, who is attempting to become World No.1 for the first time by winning the US Open, took on 2-time Wimbledon champion Petra Kvitova. Both were tied 4-4 after 8 meetings in the past but Kerber had won last two.

Kerber got first break of the match in the third game but Kvitova broke back immediately to level at 2-2. Kerber got another break in the fifth game to go 3-2 up and then broke Kvitova at 3-5 to take the first set 6-3 in 31 minutes. In second set both players saved many break points but kept on holding their serves as it was tied at 5-5.

Kerber held her serve to go 5-6 up and made Kvitova serve to stay in the match. The Czech was broken there as Kerber took the second set 7-5 to go through to the last 8. She will face last year's finalist, seventh seed Roberta Vinci next, who defeated Ukraine's Lesia Tsurenko 7-6 (5) 6-2. In another great clash, former World No.1, 2009, 2014 US Open finalist Wozniacki took on eighth seeded American Madison Keys.

The last American left in the bottom half of the draw, Keys saved 3 break points in her first game of the match and was broken in the second game. Wozniacki did not face any break point in the whole set and lost only 4 points in five games as she took the first set 6-3. In the second set Wozniacki broke Keys in the first game but Keys got break back few games later.

Wozniacki got another break in the fifth game to go 3-2 up and this time Keys could not get the break back, as Wozniacki won the second set 6-4 and reached US Open Quarterfinal for the fifth time. For a place in the last 4, Wozniacki will take on Latvia's Anastasija Sevastova, who became first female player from her country to reach last 8 of a Grand Slam. She defeated 13th seed, Australian Open semifinalist Johanna Konta in straight sets 6-4, 7-5. FULL RESULTS ON NEXT PAGE Also Read: US OPEN WOMEN'S SINGLES- Serena Williams gets all time record of 307 Grand Slam wins