The 33-year-old Serbian, who seeks a fourth US Open title and 18th Grand Slam crown, advanced to a Thursday semi-final against Spain’s Roberto Bautista Agut, who upset defending champion Daniil Medvedev, last year’s US Open runner-up from Russia, by 1-6, 6-4, 6-3.
Djokovic had no issues with a prior neck injury, testing himself well on the Flushing Meadows hardcourts in the same spectator-less Covid-19 bubble quarantine atmosphere where the US Open will be played.
“It was great. I feel very good,” said Djokovic who is 21-0 this year.
Started a little bit tight an opening couple of games of my service games. Managed to defend well.
“Ever since that first break early in the first set, I never looked back. I really played very aggressively when I have a chance. I was playing my shots. I was very pleased with my serve.”