THERE is no doubt that Nick Kyrgios (pic) has what it takes to be one of the world's best tennis players in the future.
The 20-year-old Australian, who burst onto the world stage when he defeated Rafael Nadal in the 2014 Wimbledon championships packs a magnificent serve, is athletic, ruthless and has loads of confidence.
Only time will tell if he lives up to his potential to become one of tennis' greats.
At the same time, there is no doubt about the possibility of Kyrgios being punched in the face one of these days.
His mouth is just as zippy as his serve and not many will be sad if he does.
During a Davis Cup match against Stan Wawrinka of Swittzerland, Kyrgios allegedly said to him; "Kokkinakis banged your girlfriend, sorry to tell you that mate".
This was not the first time that Kyrgios got in trouble for saying something controversial or for swearing on court – not to mention the instances when he smashed his racket or threw it into the crowd.
Many people get upset by this sort of behaviour and for good reason too – there are children watching the games live on television and these athletes are supposed to be role models.
Getting angry and swearing is normal in any sport. It happens even in cricket, which is supposed to be a sport played by gentlemen.
It happens in football, basketball, rugby and even in F1. I mean, when someone rams into you from behind, how can you not get angry?
Or when someone hacks you from behind on purpose while you're running – how can your blood not boil?
Even if you earn millions of dollars a week, anger just comes naturally.
Sometimes it is this meanness that make athletes tick and be competitive.
If John McEnroe was not an "angry" player, would he have won seven Grand Slam titles all those years ago?
But there is probably a limit to what athletes should do on field. Getting personal until insulting one's mother or their personal life is not the way to go.
It does throw your opponent off the game, but it is un-sportsman-like behaviour.
It teaches children that they can do anything to achieve success, even though it is unethical.
Kyrgios crossed the line and he probably deserves a Zinedine Zidane headbutt to his chest (not that I condone it).
"It is not only unacceptable but also beyond belief," said Wawrinka in a tweet after the game.
Kyrgios has the potential to hit the heights in the world of tennis – without having to stoop so low.