If you watch the documentary 'behind the racket' you might just change your opinion of him. Yes he is dour but that is how he is, you can't change that, it would be like getting Suarez to stop biting people.
He's a solid, professional successful multi millionaire athlete who is reaping all the overall benefits of a life dedicated to his sport. He wins some, he loses some. Good luck to him I say
He is,very high in the world rankings,a great achievement,he has the technical ability to win,but he lost through not switching into killer mode from the off I think. Yes he is dour etc,but seems to be an honest upright citizen so,good luck to him. He lasted longer than our wonderful football team.