Tennis photos - Day 4

TOKYO, JAPAN - JULY 27: Paula Badosa of Team Spain plays a backhand during her Women's Singles Third Round match against Nadia Podoroska of Team Argentina on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Naomi Osaka of Team Japan plays a backhand during her Women's Singles Third Round match against Marketa Vondrousova of Team Czech Republic on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Stefanos Tsitsipas of Team Greece serves during his Men's Singles Second Round match against Frances Tiafoe of Team USA on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Frances Tiafoe of Team USA plays a forehand during his Men's Singles Second Round match against Stefanos Tsitsipas of Team Greece on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Elina Svitolina of Team Ukraine celebrates after match point during her Women's Singles Third Round match against Maria Sakkari of Team Greece on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Garbine Muguruza of Team Spain plays a backhand during her Women's Singles Third Round match against Alison Van Uytvanck of Team Belarus on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by David Ramos/Getty Images)

TOKYO, JAPAN - JULY 27: Elena Rybakina of Team Kazakhstan plays a forehand during her Women's Singles Third Round match against Donna Vekic of Team Croatia on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Kei Nishikori of Team Japan plays a forehand during his Men's Singles Second Round match against Marcos Giron of Team USA on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by David Ramos/Getty Images)

TOKYO, JAPAN - JULY 27: Liam Broady of Team Great Britain celebrates after match point during his Men's Singles Second Round match against Hubert Hurkacz of Team Poland on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Donna Vekic of Team Croatia celebrates after a point during her Women's Singles Third Round match against Elena Rybakina of Team Kazakhstan on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)

TOKYO, JAPAN - JULY 27: Belinda Bencic of Team Switzerland plays a forehand during her Women's Singles Third Round match against Barbora Krejcikova of Team Czech Republic on day four of the Tokyo 2020 Olympic Games at Ariake Tennis Park on July 27, 2021 in Tokyo, Japan. (Photo by Clive Brunskill/Getty Images)