ANDY MURRAY believes it would rank as one of the greatest achievements in tennis if Novak Djokovic wins a fourth successive Grand Slam.
The world No.1 already holds the Wimbledon, US Open and Australian titles and needs the French Open to become the first man since Rod Laver in 1969 to make it four in a row.
Roger Federer and Rafael Nadal have both had the chance to achieve the feat in recent years, the Swiss losing twice in French Open finals to Nadal, who succumbed to knee problems and David Ferrer in the Australian Open quarter-finals last year.
Murray, who will face Japan's Tatsuma Ito, tomorrow in the opening round, said: "It would be absolutely historic. If he was able to do it, which I hope he's not, it would be an unbelievable effort."
Murray added: "Roger's obviously won the four slams, Rafa's also done it. So it would be incredible if a third player does it in a three-year period."
Murray is also a big admirer of world No.2 Nadal who is hoping to break Bjorn Borg's record of six Coupe Des Mousquetaires titles. The Scot said: "The fact Rafa started at such a young age is what's most impressive. He won it when he was just 19. I'm sure he'll win it a few more times before he finishes."
lElena Baltacha bowed out of the French Open as the British No.1 lost in straight sets 6-4, 6-0 to US Open champion Samantha Stosur.