The world No.4 has achieved a new milestone at Melbourne Park on Thursday.
Is the two-time grand slam champion facing the prospect of playing another grand slam tournament with an injury cloud looming over her head?
The Barty Army was given a reason to celebrate on Thursday, but Romanian fans were left disappointed.
What a year it has been in the world of women's tennis.
Ubitennis takes a close look at the biggest earners in the world of tennis this year.
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.