Nick Kyrgios slams 'selfish' Alexander Zverev for partying

Nick Kyrgios let rip at "selfish" fellow tennis star Alexander Zverev on Monday after the German was seen partying despite promising to self-isolate following Novak Djokovic's Coronavirus-hit Adria Tour.

Djokovic, Grigor Dimitrov, Borna Coric and Viktor Troicki all subsequently tested positive for COVID-19. While Zverev tested...