The Estonian was down 6-4, 4-0 before a comeback saw her win her third title of 2021.

The No. 2-ranked Russian is currently 1,800 points behind Novak Djokovic on the ATP rankings.

The No. 13-ranked Italian and the No. 14-ranked Argentine will be playing each other for the first time.

She faces Ekaterina Alexandrova in the women's final in Moscow. Marin Cilic plays Aslan Karatsev in the men's.

The ATP and the WTA have done collabs over the years. What about a merger? Over the last two years, there’s been more momentum to make that happen than ever.

"It was a difficult decision but I need to prioritize my body and my recovery from our 2021 season," the world No. 1 said in a statement. Continuing COVID-19 travel and quarantine restrictions were also factors.

Top seed Jannik Sinner will meet No. 7 seed Lloyd Harris in the first final-four clash Saturday at the European Open.

Aryna Sabalenka’s first tournament since testing positive for the coronavirus ended after only two matches.

Looking ahead to Novak Djokovic’s return; year-end races to new places—Turin and Guadalajara; and the return of Davis Cup and Billie Jean King Cup, two old team events that could feel new again.

"The play was very nervous, and I would have gone back to these matches to worry less," the Belarusian said regarding this year's Wimbledon and US Open exits.

The fifth competitor to punch her ticket to Guadalajara, Sakkari's Kremlin Cup campaign continues against Simona Halep Friday.