After nearly a year of global travel and dozens of matches, most of Novak Djokovic’s rivals are complaining about their mental and physical fatigue. Not the Serb. He thrives in the rigours of a tough autumn finish. Unbeaten since losing the US Open final to Rafael Nadal, Djokovic joined Nadal in the ATP World Tour Finals semi-finals, overcoming Juan Martin del Potro. After extending his winning streak to 19 matches with a 6-3, 3-6, 6-3 victory over the hard-hitting Argentine, Djokovic said he was playing the best tennis of his season. “I just feel well at this particular part of the year,” the six-time grand slam winner said. “I know most of the players are exhausted physically, mentally, emotionally, after a long season. But, you know, I try to find that as an opportunity for me, you know, to get extra motivated to kind of push myself to the limit and deliver the goods when needed.” Against del Potro, he delivered. In a very tight match, the Serb broke his rival twice, just enough to come out on top. “He has one of the biggest serves in the sport,” Djokovic said. “He has one of the most aggressive forehands. I just needed to stay tough.”
