The Swiss doubles team of Viktorija Golubic, left, and Belinda Bencic, of Switzerland, play an Australian doubles team during the quarterfinal round of the tennis competition at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

The Swiss doubles team of Viktorija Golubic, right, and Belinda Bencic, of Switzerland, play an Australian doubles team during the quarterfinal round of the tennis competition at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

The German doubles team of Jan-Lennard Struff, left, and Alexander Zverev talks during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)