Boris Becker believes Novak Djokovic is now 'poised' to win the Grand Slam race after his latest Australian Open success.
Djokovic claimed a ninth title in his favourite tournament to close to within two of the record for the most career Grand Slams.
That record is currently jointly held by Rafael Nadal and Roger Federer, but Becker, who used to coach Djokovic, believes the sands of time may be shifting his way.
"The battle for the most Grand Slams between the three greatest players continues," Becker wrote in his Daily Mail column.
"Now he is within two of Roger Federer and Rafael Nadal the nine-time Australia champion is moving up and poised to overtake them.
He is a year younger, which is significant. My view is that Federer is still capable of winning Wimbledon and that Nadal is still the favourite for the French Open."
Becker added that for the first time he is feeling a little worried for Rafael Nadal, who uncharacteristically threw a two-set lead away against Stefanos Tsitsipas in the Australian Open quarterfinal
"There was definitely some vulnerability in Nadal if we think forward to Paris.
"His five-set defeat by Stefanos Tsitsipas will sting for some time, and could even be a factor at the French Open.
"For the first time I can recall Rafa looked really tired in that fifth set, he was beaten physically, and the others will have seen that.
"The Spaniard's style is so physical that it is going to take a toll.
"I am actually surprised that he has played to this incredibly high level for so long.
"While it would be foolish to bet against him for Paris, when he gets that little step slower he will not be the same player."
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