Having faced him on three occasions already this season, few opponents are in a better position to judge Andy Murray's progression better than Mario Ancic.
And the Croat, nicknamed "Baby Goran" following his famous victory over Roger Federer in 2002, is convinced British number one Murray has what is takes to win a Grand Slam title.
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Patience, Ancic says, is the key.
He is not a close friend of Murray's and was not speaking in such glowing terms for fear of upsetting the world number 11.
He genuinely feels Murray is set for the top but he is pleading with the British public and those around Murray to give him time.
Ancic should know - he broke into the top 10 at a similar age to what Murray is now before being ravaged by injury and illness.
There are punters on 606 who believe Ancic would be world number one if his progress had not been cruelly checked.
Controversially, in my opinion, Ancic says Murray's suspect temper is a good thing and he would be a lesser player without it.
Do you agree?
Murray has yet to win a match at Roland Garros so, allied to the fact that clay is the surface least favouring his style, the 21-year-old is unlikely to make an impact at this particular French Open.
But then we move on to Wimbledon and the US, which suit his game far more and he should be in with a shout.
I'd like to know what you think of Ancic's comments and whether you believe Murray has what it takes to win a Slam.