Boris Becker and Nick Kyrgios exchanged verbal on blows on Twitter after the Australian branded fellow tennis star Alexander Zverev selfish for partying during the COVID-19 pandemic, despite promising to self-isolate.

German legend Becker, a six-time Grand Slam winner, took umbrage with Kyrgios's comment over viral footage of Zverev partying despite pledging to follow self-isolating guidelines after playing in Novak Djokovic's Coronavirus-hit Adria Tour. Zverev took part in the exhibition event organised by Djokovic, who last week tested positive for COVID-19 along with Grigor Dimitrov, Borna Coric and Viktor Troicki.