The Serb's announcement means the eight players who will contest the season-ender in Turin have now been confirmed.

She was the only woman to win two Grand Slam doubles titles this year, and she won them with two different partners.

Gauff earned the straight-sets victory needed to guarantee her spot in the final four in Riyadh, knocking out the former world No. 1 for only the second time in 13 meetings.

The 26-year-old was branded as having “no class” for excessively celebrating his semifinal win against the injured Russian.

The Wimbledon champion shook off a brutal loss to Iga Swiatek, keeping herself in contention for the semifinals.

And if she wins one more match this week—or if Iga Swiatek loses a match—then Sabalenka clinches year-end No. 1.

After adding two more majors to her trophy collection, the WTA Finals’ top seed nurtures a bourgeoning celebrity while continuing to improve a fearsome on-court arsenal.

The Olympic champion improved to 1-1 in round-robin play while Rybakina finds herself on the brink of elimination after two matches.

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Meanwhile, Katie Boulter closes in on the Top 20, Turkish rising star Zeynep Sonmez breaks into the Top 100 and Alexander Zverev returns to his career-high of No. 2.

Aryna Sabalenka, Iga Swiatek and Coco Gauff lead an exclusive, eight-player field at the tour's lucrative season-ending championship.