Reilly Opelka of the US celebrates his win over Stefanos Tsitsipas of Greece in the semifinals of the National Bank Open men’s tennis tournament in Toronto, Canada, 14 August 2021. EPA-EFE/WARREN TODAKarolina Pliskova of Czech Republic celebrates her victory over Aryna Sabalenka of Belarus during the semifinals of the Rogers Cup Women’s tennis tournament in Montreal, Canada, 14 August 2021. EPA-EFE/ANDRE PICHETTEJohn Isner of the USA in action against Gael Monfils of France during their quarterfinals match at the National Bank Open tennis tournament in Toronto, Canada, 13 August 2021. EPA-EFE/WARREN TODAMackenzie McDonald from the US reacts after defeating Kei Nishikori from Japan in their semifinal men’s singles match of the Citi Open ATP tennis tournament at the Rock Creek Park Tennis Center in Washington, DC, USA, 07 August 2021. EPA-EFE/JIM LO SCALZOSofia Kenin of the USA in action during the 4th round match against Maria Sakkari of Greece at the French Open tennis tournament at Roland Garros in Paris, France, 07 June 2021. EPA-EFE/YOAN VALATDiego Schwartzman of Argentina in action against Liam Broady of Britain during their second round match at the Wimbledon Championships, Wimbledon, Britain 30 June 2021. EPA-EFE/FACUNDO ARRIZABALAGALuisa Stefani of Brazil (L) and Gabriela Dabrowski of Canada (R) in action against Darija Jurak of Croatia and Andreja Klepac of Slovenia during the Women’s Mubadala Silicon Valley Classic tennis match doubles finals at San Jose State University in San Jose, California, USA, 08 August 2021. EPA-EFE/JOHN G. MABANGLOAshleigh Barty of Australia celebrates with the trophy after winning her women’s final match against Karolina Pliskova of Czech Republic at the Wimbledon Championships, Wimbledon, Britain 10 July 2021. EPA-EFE/NEIL HALL