Karolina Pliskova raised her game when it mattered to claim victory over Halep and earn a semi-final clash with Barty at the 2019 WTA Finals.
Elina Svitolina beat Simona Halep in straight sets in confident style to book her place in the semi-finals at the WTA Finals in Shenzhen.
Simona Halep saved a match point to win her first match at the WTA Finals, beating Bianca Andreescu in three sets.
The Romanian is set to play extra events in the majors in a bid to boost her chances of winning a medal in Tokyo.
Who has already qualified for the WTA Finals, and who is in position to claim the remaining spots?
There was mixed fortunes for two top women's players in China on Wednesday.
The world No.4 is hoping to regain some momentum in the coming weeks following a duo of early tournament losses.
The two players have made some changes as the season goes into its final quarter.
Simona Halep will miss next week's Zhengzhou Open due to an ankle injury.
The world No.4 is the first top five player to crash out of Flushing Meadows this year in the women's draw.
Simona Halep talked about her high level of self-belief and her relief at ending her sequence of US Open first-round losses.
Serena Williams versus Maria Sharapova is the headline clash in an intriguing 2019 US Open Women's Singles Draw.
The Romanian has suffered a injury scare during her preparation for the US Open.
Simona Halep received one of the highest awards in Romania just before beginning her preparations for the US Open.
Wimbledon may have finished on Sunday, but the world of tennis does not stop for anybody.
From joining a new club to taking a break, the new Wimbledon Champion spoke about an array of topics following her triumph at The All England...
The highly anticipated clash at The All England Club turned out to be a one-way Halep Masterclass.
Serena Williams goes for a record-tying 24th Major, while Simona Halep tries to solidify her Hall of Fame resume with her second.
WIMBLEDON: Serena Williams and Simona Halep will lock horns on Saturday for the chance to win the 133rd edition of the Wimbledon Championships. 11th seed Williams...
The 27-year-old has sealed her return back into the world’s top five at The All England Club.