The 23-year-old has won more than $4 million prize money after prevailing at the end-of-season extravaganza.
The top two seeds and the bottom two seeds face off to secure a spot in tomorrow’s championship match.
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.
The world No.4 has suffered a blow heading into the prestigious WTA Finals later this month.
Things hasn't gone as well as the world No.4 would have wanted this year.
Elina Svitolina survived a first set dip against Anastasija Sevastova to reach the second round of the China Open.
There was mixed fortunes for two top women's players in China on Wednesday.
The former world No.1 speaks out about her 'crazy' journey to yet another major final.
Elina Svitolina advanced to the semi-final of US Open 2019 after beating Johanna Konta in straight sets in a pulsating encounter.
Elina Svitolina earns revenge for her 2017 loss to Madison Keys at the US Open by beating her in straight sets in 2019.
Madison Keys explained her recent health scare as she looks to win her first grand slam title in week two of the US Open.
Madison Keys and Elina Svitolina are all set for another intriguing encounter at the US Open after straight-set victories.
Elina Svitolina survived two fightbacks from Venus Williams as she beat the American 6-4 6-4 to advance to the third round of US Open 2019.
Serena Williams versus Maria Sharapova is the headline clash in an intriguing 2019 US Open Women's Singles Draw.
Maria Sakkari saved four match points as she battled past Elina Svitolina to reach the San Jose semi-finals.
Elina Svitolina is looking forward to the American hard court swing after reaching the last eight in San Jose.
Elina Svitolina headlines next week's action in San Jose and could face the defending champion in her first match.
On the eve of women’s semi-finals day at Wimbledon, the coaches working behind the scenes share their thoughts.
Elina Svitolina got the better of Karolina Muchova in two rollercoaster sets to progress to her first Grand Slam semi-final.