Nitto ATP World Tour Finals - Previews

(L-R) Matteo Berrettini of Italy, Dominic Thiem of Austria, Roger Federer of Switzerland and Novak Djokovic of Serbia speak top the media during previews for the Nitto ATP World Tour Finals at The O2 Arena on November 08, 2019 in London, England.
(Nov. 7, 2019 - Source: Getty Images Europe)