Barbora Krejcikova, of the Czech Republic, left, argues with the chair umpire while her partner Katerina Siniakova looks on during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Barbora Krejcikova, of the Czech Republic, right, celebrates with her partner Katerina Siniakova during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)

Barbora Krejcikova, of the Czech Republic, left, argues with the chair umpire while her partner Katerina Siniakova looks on during the quarterfinals of the tennis competition at the 2020 Summer Olympics, Wednesday, July 28, 2021, in Tokyo, Japan. (AP Photo/Seth Wenig)