6-1, 5-1 collapse at Open; Djokovic opts for home over hotel

Kristina Mladenovic, of France, returns a shot to Varvara Gracheva, of Russia, during the second round of the US Open tennis championships, Wednesday, Sept. 2, 2020, in New York. (AP Photo/Seth Wenig)

Varvara Gracheva, of Russia, returns a shot to Kristina Mladenovic, of France, during the second round of the US Open tennis championships, Wednesday, Sept. 2, 2020, in New York. (AP Photo/Seth Wenig)

Novak Djokovic, of Serbia, returns a shot to Kyle Edmund, of Great Britain, during the second round of the US Open tennis championships, Wednesday, Sept. 2, 2020, in New York. (AP Photo/Seth Wenig)

Ann Li, of the United States, serves to Alison Riske, of the United States, during the second round of the US Open tennis championships, Wednesday, Sept. 2, 2020, in New York. (AP Photo/Seth Wenig)