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Roger Federer, of Switzerland, waves spectators after losing the match against Pablo Andujar, of Spain, during their second round match, at the ATP 250 Geneva Open tournament in Geneva, Switzerland, Monday, May 17, 2021. The matches of the Geneva Open are played in front of 100 spectators due to preventive measure against the spread the coronavirus COVID-19. (KEYSTONE/Salvatore Di Nolfi)