Serbia coach: team was against Djokovic's mixed doubles play
The Serbian mixed doubles team of Nina Stojanovic, left, and Novak Djokovic play during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

The Serbian mixed doubles team of Nina Stojanovic, left, and Novak Djokovic play during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Jul. 29, 2021 09:22 AM EDT
Novak Djokovic, of Serbia, reacts after winning the first set against Kei Nishikori, of Japan, during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Novak Djokovic, of Serbia, reacts after winning the first set against Kei Nishikori, of Japan, during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Jul. 29, 2021 06:01 AM EDT
The Serbian mixed doubles team of Nina Stojanovic, left, and Novak Djokovic play during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

The Serbian mixed doubles team of Nina Stojanovic, left, and Novak Djokovic play during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Jul. 29, 2021 09:22 AM EDT
Novak Djokovic, of Serbia, plays Kei Nishikori, of Japan, during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Novak Djokovic, of Serbia, plays Kei Nishikori, of Japan, during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Jul. 29, 2021 08:11 AM EDT