Open d’Australie – Djokovic révèle son meilleur match disputé en carrière
Serbia's Novak Djokovic reacts after breaking serve to go 4-3 in the second set against US player John Isner during their men's singles round-robin match on day two of the ATP World Tour Finals tennis tournament at the O2 Arena in London on November 12, 2018. (Photo by Glyn KIRK / AFP)