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MOSCOW, RUSSIA - OCTOBER 20, 2019: Switzerland's tennis player Belinda Bencic recieves the Kremlin Cup trophy during a ceremony after her 2-1 victory in the women's singles final against Anastasia Pavlyuchenkova (not pictured) at the 2019 VTB Kremlin Cup tennis tournament at Krylatskoe Ice Palace. Mikhail Tereshchenko/TASS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

MOSCOW, RUSSIA - OCTOBER 20, 2019: Switzerland's tennis player Belinda Bencic recieves the Kremlin Cup trophy during a ceremony after her 2-1 victory in the women's singles final against Anastasia Pavlyuchenkova (not pictured) at the 2019 VTB Kremlin Cup tennis tournament at Krylatskoe Ice Palace. Mikhail Tereshchenko/TASS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

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MOSCOW, RUSSIA - OCTOBER 20, 2019: Russia's Anastasia Pavlyuchenkova returns a shot in the women's singles final match against Bencic at the 2019 VTB Kremlin Cup tennis tournament at Krylatskoe Ice Palace. Mikhail Tereshchenko/TAS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

MOSCOW, RUSSIA - OCTOBER 20, 2019: Russia's Anastasia Pavlyuchenkova returns a shot in the women's singles final match against Bencic at the 2019 VTB Kremlin Cup tennis tournament at Krylatskoe Ice Palace. Mikhail Tereshchenko/TAS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

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MOSCOW, RUSSIA - OCTOBER 20, 2019: Russia's Andrey Rublev holds the Kremlin Cup trophy during an award ceremony after his victory in the men's singles final match against France's Adrian Mannarino at the 2019 VTB Kremlin Cup International Tennis Tournament at the Krylatskoye Ice Palace. Mikhail Tereshchenko/TASS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

MOSCOW, RUSSIA - OCTOBER 20, 2019: Russia's Andrey Rublev holds the Kremlin Cup trophy during an award ceremony after his victory in the men's singles final match against France's Adrian Mannarino at the 2019 VTB Kremlin Cup International Tennis Tournament at the Krylatskoye Ice Palace. Mikhail Tereshchenko/TASS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

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MOSCOW, RUSSIA - OCTOBER 20, 2019: Widow of the first Russian president Boris Yeltsin Naina Yeltsina (L) and Russia's Andrey Rublev during an award ceremony after his victory in the men's singles final match against France's Adrian Mannarino at the 2019 VTB Kremlin Cup International Tennis Tournament at the Krylatskoye Ice Palace. Mikhail Tereshchenko/TASS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

MOSCOW, RUSSIA - OCTOBER 20, 2019: Widow of the first Russian president Boris Yeltsin Naina Yeltsina (L) and Russia's Andrey Rublev during an award ceremony after his victory in the men's singles final match against France's Adrian Mannarino at the 2019 VTB Kremlin Cup International Tennis Tournament at the Krylatskoye Ice Palace. Mikhail Tereshchenko/TASS (Photo by Mikhail Tereshchenko\TASS via Getty Images)

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MOSCOW, RUSSIA - OCTOBER 20: Adrian Mannarino of France in action against Andrei Rublev (not seen) of Russia during the Men's final match at the VTB Kremlin Cup 2019 in Moscow, Russia on October 20, 2019. (Photo by Sefa Karacan/Anadolu Agency via Getty Images)

MOSCOW, RUSSIA - OCTOBER 20: Adrian Mannarino of France in action against Andrei Rublev (not seen) of Russia during the Men's final match at the VTB Kremlin Cup 2019 in Moscow, Russia on October 20, 2019.
 (Photo by Sefa Karacan/Anadolu Agency via Getty Images)