Nicholas Hilmy Kyrgios is an Australian professional tennis player. In singles, he has a career high ATP singles ranking of world No. 13, achieved on 24 October 2016. Kyrgios has won six ATP titles and has reached nine ATP finals, including a Masters 1000 final at the 2017 Cincinnati Masters.
After the match, the fourth-seeded Tsitsipas said Kyrgios has "an evil side" and must have been "a bully at school" for the way he behaved throughout the match.
Responded Kyrgios: "To come in here and say I bullied him, that's just soft. We're not cut from the same cloth. I go up against guys who are true competitors. If he's affected by that today, then that's what's holding him back, because someone can just do that and that's going to throw him off his game like that. I just think it's soft."