Nick Kyrgios, according to a recognized observer and former major finalist, has “as much, if not more potential” than tennis legends Roger Federer and John McEnroe.
Greg Rusedski, a former World No. 4, believes that the controversial Australian is more concerned about social media spats than tennis.
Kyrgios has divided critics throughout his career for failing to reach his full potential while arguably offering excellent entertainment.
The 26-year-old is presently ranked 86th in the world, after reaching a career-high of 13th in 2016.
“The problem is he doesn’t want a coach. He’s had great influences around him – Lleyton Hewitt, what a great champion he was. The Australian tennis coaches have a fantastic system,” the Canadian told talkSPORT.
“There’s nothing I could say to Kyrgios. The only person who can make that decision is himself if he wants to become a champion. He’s more worried about spats on social media and other things on social media.
“He could be a great guy for the game of tennis, he just doesn’t put the work and effort in and if you don’t – the older you get, the harder it becomes.
“He’s got as much talent if not more talent than Federer or John McEnroe. But it doesn’t matter how ridiculously talented you are, it doesn’t beat hard work, the day-to-day grind and commitment.”
Today, Kyrgios, a six-time ATP Tour champion, will meet Roberto Bautista Agut in the first round of the US Open.