![Michael Vrbensky of Czech Republic returns a shot to Elias Ymer of Sweden during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Czech Republic, August 20, 2020. ( Michael Vrbensky of Czech Republic returns a shot to Elias Ymer of Sweden during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Czech Republic, August 20, 2020. (](https://c8.alamy.com/comp/2CCAKM0/michael-vrbensky-of-czech-republic-returns-a-shot-to-elias-ymer-of-sweden-during-the-i-cltk-prague-open-of-the-atp-challenger-tour-match-in-prague-czech-republic-august-20-2020-ctk-photomichal-kamaryt-2CCAKM0.jpg)
Michael Vrbensky of Czech Republic returns a shot to Elias Ymer of Sweden during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Czech Republic, August 20, 2020. (
![Player tests positive for COVID-19 in Prague ATP Challenger, placed under home quarantine-Sports News , Firstpost Player tests positive for COVID-19 in Prague ATP Challenger, placed under home quarantine-Sports News , Firstpost](https://images.firstpost.com/wp-content/uploads/2020/08/Prague-Open-2020-ATP-Twitter-@ATPChallenger-social.jpg)
Player tests positive for COVID-19 in Prague ATP Challenger, placed under home quarantine-Sports News , Firstpost
![Roman Saifullin of Russia reacts during his I CLTK Prague Open of the ATP, Tennis Herren Challenger Tou Roman Saifullin of Russia reacts during his I CLTK Prague Open of the ATP, Tennis Herren Challenger Tou](https://www.imago-images.com/bild/sp/0047870329/w.jpg)
Roman Saifullin of Russia reacts during his I CLTK Prague Open of the ATP, Tennis Herren Challenger Tou
![Prague, Czech Republic. 22nd Aug, 2020. Russian tennis player Aslan Karatsev in action during the I. CLTK Prague Open of the ATP Challenger Tour match against Swiss Stanislas "Stan" Wawrinka on August Prague, Czech Republic. 22nd Aug, 2020. Russian tennis player Aslan Karatsev in action during the I. CLTK Prague Open of the ATP Challenger Tour match against Swiss Stanislas "Stan" Wawrinka on August](https://c8.alamy.com/comp/2CCPCFJ/prague-czech-republic-22nd-aug-2020-russian-tennis-player-aslan-karatsev-in-action-during-the-i-cltk-prague-open-of-the-atp-challenger-tour-match-against-swiss-stanislas-stan-wawrinka-on-august-22-2020-in-prague-czech-republic-credit-roman-vondrousctk-photoalamy-live-news-2CCPCFJ.jpg)
Prague, Czech Republic. 22nd Aug, 2020. Russian tennis player Aslan Karatsev in action during the I. CLTK Prague Open of the ATP Challenger Tour match against Swiss Stanislas "Stan" Wawrinka on August
![Prague, Czech Republic. 20th Aug, 2020. Sumit Nagal of India returns a shot to Stan Wawrinka of Switzerland during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Prague, Czech Republic. 20th Aug, 2020. Sumit Nagal of India returns a shot to Stan Wawrinka of Switzerland during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague,](https://c8.alamy.com/comp/2CCAJGC/prague-czech-republic-20th-aug-2020-sumit-nagal-of-india-returns-a-shot-to-stan-wawrinka-of-switzerland-during-the-i-cltk-prague-open-of-the-atp-challenger-tour-match-in-prague-czech-republic-august-20-2020-credit-michal-kamarytctk-photoalamy-live-news-2CCAJGC.jpg)
Prague, Czech Republic. 20th Aug, 2020. Sumit Nagal of India returns a shot to Stan Wawrinka of Switzerland during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague,
![Prague: Pierre-Hugues Herbert and Stan Wawrinka qualified for the semi-finals - Tennis - Challenger - Prague - Archyde Prague: Pierre-Hugues Herbert and Stan Wawrinka qualified for the semi-finals - Tennis - Challenger - Prague - Archyde](https://medias.lequipe.fr/img-photo-jpg/pierre-hugues-herbert-ici-lors-du-challenge-elite-fft-est-a-deux-matches-d-un-titre-en-republique/1500000001369049/0:0,1998:1332-640-427-25/072d0.jpg)
Prague: Pierre-Hugues Herbert and Stan Wawrinka qualified for the semi-finals - Tennis - Challenger - Prague - Archyde
![Elias Ymer of Sweden returns a shot to Michael Vrbensky of Czech Republic during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Czech Republic, August 20, 2020. ( Elias Ymer of Sweden returns a shot to Michael Vrbensky of Czech Republic during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Czech Republic, August 20, 2020. (](https://c8.alamy.com/comp/2CCAKDG/elias-ymer-of-sweden-returns-a-shot-to-michael-vrbensky-of-czech-republic-during-the-i-cltk-prague-open-of-the-atp-challenger-tour-match-in-prague-czech-republic-august-20-2020-ctk-photomichal-kamaryt-2CCAKDG.jpg)
Elias Ymer of Sweden returns a shot to Michael Vrbensky of Czech Republic during the I. CLTK Prague Open of the ATP Challenger Tour match in Prague, Czech Republic, August 20, 2020. (
![Prague Challenger predictions, H2H: Wawrinka, Kohlschreiber, Herbert and Nagal to play on Monday - Tennis Tonic - News, Predictions, H2H, Live Scores, stats Prague Challenger predictions, H2H: Wawrinka, Kohlschreiber, Herbert and Nagal to play on Monday - Tennis Tonic - News, Predictions, H2H, Live Scores, stats](https://tennistonic.com/wp-content/uploads/2020/08/Wawrinka-to-compete-in-Prague-1280x720.jpg)