An early farewell and a shock for Djokovic at the US Open Tennis Championship

The 39-year-old player bid farewell to the US Open Tennis Championship after being defeated in the first round by Navone on Sunday evening, with a score of 7-6 (5), 5-7, 4-6, 6-2, 6-1, in a five-set marathon match that lasted four hours and thirty-six minutes.

This was the longest opening match in a Grand Slam tournament in Djokovic's career, and his fastest exit in two decades since the Australian Open in 2006, and he had never lost in the first round of the US Open.

The record holder with 24 major titles vomited at least once and later appeared to suffer muscle spasms when he grabbed his left foot.

Djokovic took pills brought to him by the doctor and underwent a lower back massage during a medical break between the fourth and fifth sets, and he appeared in pain after several hits.

Djokovic committed 70 unintentional errors in a painful performance that ended a few minutes before midnight.

With this defeat, exactly 21 years after his first appearance at the US Open, the question remains whether this is Djokovic's last match in this tournament or any Grand Slam tournament. After the loss, he said that he is "trying to understand what is really happening and how far I can go this way."