Marcelo Melo Pictures
LONDON, ENGLAND - NOVEMBER 16: Lukasz Kubot of Poland, playing partner of Marcelo Melo of Brazil plays a forehand in their semi-final doubles match against Nicolas Mahut and Pierre-Hugues Herbert of France during Day Seven of the Nitto ATP World Tour Finals at The O2 Arena on November 16, 2019 in London, England. (Photo by Justin Setterfield/Getty Images)