John McEnroe believes Novak Djokovic is unlikely to play more matches this year again after his retirement against Stan Wawrinka in the US Open fourth round., The seven-time Major winner, speaking on ESPN, said: "I don't think we will be seeing Novak Djokovic for the rest of the year."
McEnroe's brother Patrick spoke about the crowd booing Djokovic following the retirement: "Booing Novak tonight was not right." He also praised Stan Wawrinka: "Monster hitting tonight. Stan is back. Has anyone hit a one-handed backhand harder? I don’t think so…”.
Wawrinka said: "I am sorry he had to retire and finish the game but for me, the most important was to play well and I did. I was playing good on the court, better and better, moving well, I was feeling great on the court.
For sure I saw by some little things that he was in trouble but I was most of the time focused on myself because I knew how hard he can fight and come back, it doesn't matter how he is feeling. He is a good friend and amazing champion so if he has to retire it's not the best.
To be back in the night session here is always special, always a great atmosphere, I was really happy to be back." Djokovic retired while down 4-6, 5-7, 1-2 to the Swiss 22nd seed. Wawrinka will play Daniil Medvedev in the quarter-finals. The Russian defeated German qualifier Dominik Koepfer in the fourth round.