The Dutch player has ended Halep's hopes of reclaiming the no.1 spot.
Kiki Bertens beat Sloane Stephens in straight sets at the Madrid Open to book her place in her third WTA Premier 5 final.
The world No.7 evaluates her form and her chances of claiming a maiden grand slam title.
Naomi Osaka maintained her grip on the World No.1 ranking with a serene straight-sets victory over Su-Wei Hsieh in Stuttgart.
2018 Champion Kiki Bertens crashed out of the Volvo Car Open in the third round with a straight-sets loss to Maria Sakkari.
Karolina Pliskova was affected by an exhausting Fed Cup weekend as she withdrew from this week's action in Doha.
Both women overcame some stern resistance from their opponents to win their first title of 2019.
Pavlyuchenkova earned a big win over 9th seed Bertens, while Sasnovich also stunned 20th seed Kontaveit.
The Dutch player has reached the semi-finals of the tournament despite being the lowest ranked player in the draw.
Sloane Stephens produced a stirring fightback in the final set to gain a vital win over Kiki Bertens that edges her closer to the last four.
Kiki Bertens sealed an 11th top ten win today as she beat Angelique Kerber on her WTA Finals debut.
Naomi Osaka heads a trio of debutants bidding to make their mark in Singapore.
Kiki Bertens saved championship point as she defeated Simona Halep 2-6 7-6(6) 6-2 to win the Western and Southern Open.
The French Open champion is hoping to make up for her crushing loss to Garbine Muguruza at the same tournament 12 months ago.
Kiki Bertens has reached her first Wimbledon quarter-final after a straight sets win over the 7th seed Karolina Pliskova.
Kiki Bertens stunned Venus Williams to reach the fourth round of Wimbledon in a brutal match.
It took just 67 minutes for Kiki Bertens to book her place in the Madrid Open final with a comprehensive 6-2 6-2 victory over 7th seed...
Kiki Bertens claimed her first WTA Premier title after thrashing Julia Goerges 6-2 6-1 in the final of the Volvo Car Open in Charleston.
Kiki Bertens beat Madison Keys 6-4 6-7 7-6 in a thrilling semi-final in Charleston to book a place in her first WTA Premier final.
Two of the tournament’s biggest names remain on a collision course for a hard-hitting final in the Swiss Alps as third-seeded Estonian Anett Kontaveit and second-seeded...