Nick Kyrgios opened a cheeky Twitter poll Monday asking how many years he would be banned if he had hit an official with a ball, after 17-time Grand Slam winner Novak Djokovic's default at the US Open.

The Australian has waged a running battle with the Serb in recent months over his ill-fated Adria Tour exhibition series, lashing out at Djokovic's "stupidity" after several players contracted Coronavirus. And he was quick to have his say after Djokovic was sensationally disqualified from the US Open for hitting a woman line judge in the throat with a ball bashed away in disgust after losing his serve.