LONDON, ENGLAND - NOVEMBER 14: Andrey Rublev of Russia plays a backhand during a training session prior to the Nitto ATP World Tour Finals at O2 Arena on on November 14, 2020 in London, England. (Photo by Clive Brunskill/Getty Images)
LONDON, ENGLAND - NOVEMBER 14: Andrey Rublev of Russia plays a backhand during a training session prior to the Nitto ATP World Tour Finals at O2 Arena on on November 14, 2020 in London, England. (Photo by Clive Brunskill/Getty Images)