This was just days after Zverev stated he would self-isolate after his exposure to COVID-positive Adria Tour participants Novak Djokovic, Grigor Dimitrov, Borna Coric, Viktor Troicki and Goran Ivanisevic.

Nick Kyrgios has emerged as the voice of reason during all of the recent coronavirus fallout, questioning the US Open's decision to push onward and putting his fellow players on blast.

Advertising

Never afraid to share his opinion, he was clear on what he thought of the Adria Tour players partying at a night club in Belgrade.

Advertising

Then came footage of Alexander Zverev going to a packed day club in Monaco with Lucas Pouille.

This was just days after Zverev stated he would self-isolate after his exposure to COVID-positive Adria Tour participants Novak Djokovic, Grigor Dimitrov, Borna Coric, Viktor Troicki and Goran Ivanisevic.

Advertising

The latest has been a Twitter spat with Boris Becker, who referred to Krygios as a rat for calling out Zverev and Djokovic.

Advertising

The mini-feud escalated from there, with Kyrgios calling the German both a champion and a doughnut.

It all ended quite abruptly, at least from Kyrgios' end.

Advertising

But Becker went on:

Advertising

With Reilly Opelka chiming in to raise one question many were thinking:

Advertising

If Kyrgios was playing the Ultimate Tennis Showdown his nickname would have to be "The Enforcer". The 26-year-old has been at home in Canberra for the tour shutdown, posting plenty of training videos as well as cozy photos with what is presumably his new girlfriend, Chiara Passari.

Check out the latest episode of the TENNIS.com Podcast with Sachia Vickery:

Rat vs. Doughnut: 
Kyrgios handles 
Becker's heat

Rat vs. Doughnut: Kyrgios handles Becker's heat