Roger Federer and Novak Djokovic secret REVEALED: Expert reveals truth - do they get on?
VOGUE/GETTY
Jamie Mason Cohen is a leading analyst who can unravel the truth behind a person and their feelings from their writing.
Djokovic wrote a message to Federer for Vogue magazine a few years ago to wish him happy birthday.
Cohen has analysed that - and Djokovic's signature - to reveal the truth behind the Serb.
And he says the relationship between Djokovic and Federer, who have won 32 Grand Slam titles between them, is a tight one - and they could even play practical jokes on one another.
Speaking exclusively to Express Sport, Cohen explained: "Novak has a quirky, silly, fun, child-like sense of humour. He likes to be seen as a unique, eclectic character.
"He doesn’t take himself too seriously. He has exceptional social aptitude with people, yet keeps clear social and emotional boundaries. He’s direct yet diplomatic and lacks pretension.
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"Overall, Novak is likeable. What you see is what you get. There is no pretending to be something that he’s not. Novak has a lot of respect for Roger, yet he’s not threatened by him. He knows his own worth.
"He is confident, bold, a good sense of self and a healthy ego. He’s not intimidated by Roger nor obsequiously praising him. He genuinely sees Roger as a mentor and a friend to look up to.
"He feels humbled in Roger’s presence. His handwritten note shows that he sincerely believes what he’s thoughtfully and carefully written in its optimism, clarity and directness. He really means what he’s written to Roger when he writes: “Keep on Inspiring all the world of sport.”
"He has a good relationship with Roger – one of mutual respect. They probably have played practical jokes on one another on tour."
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Roger Federer breaks down in tears after Australian Open win Sun, January 28, 2018 Roger Federer was overcome with emotion after triumphing in the Australian Open final Play slideshow AFP/Getty Images 1 of 9 Roger Federer broke down in tears after winning the Australian Open
While Djokovic may have respect for Federer, Cohen has interestingly revealed the 'loner' side of the tennis star.
He added: "His writing is indicative of being a bit of a loner in his personal life. He needs his own space to decompress and recharge. A solo sport suits him more than a team sport.
"Novak is experiencing physical pain and discomfort at the time of the writing in the mid-upper region of his body. He has physical stamina and strength to overcome setbacks. He’s persistent in his goals and won’t give up easily or attributes and admires that characteristic in Roger.
"He is loyal to family and friends – Roger Federer amongst the friends he admires. He shows that he pays attention to specific details.
GETTY Roger Federer has won 20 Grand Slam titles