A majority skysports.com readers are convinced Rafael Nadal can go on to eclipse Roger Federer's record of 17 grand slam titles following his US Open final victory over Novak Djokovic.
The 27-year-old's success at Flushing Meadows represented a 13th major title, leaving him one behind Pete Sampras and four adrift of Federer's tally.
61 per cent of voters in a poll on skysports.com believe the Spaniard will rack up more than 17 major titles before he retires, but the bookmakers are less convinced.
Sky Bet offer 5/2 on Nadal winning more major titles than Federer despite doubts over the Swiss star's ability to add to his tally.
While the 'King of Clay' has enjoyed a remarkable 2013 campaign, racking up 10 titles since returning from injury, his great rival has failed to even reach a major final.
A fourth-round defeat to Tommy Robredo at the US Open saw Federer drift out to 11/1 for the next Grand Slam, the Australian Open, while Nadal has come in from 9/2 to 5/2.
With the Spaniard odds-on to land a ninth French Open next year, fitness is likely to be the biggest barrier between him and another slice of history.
Doubts over rediscovering top form grew throughout his seven-month lay-off, but a more aggressive and powerful Nadal re-emerged, resulting in unprecedented success on hard courts along with his typically imperious showings on clay.
A 22-match winning streak on a surface once considered his least favourite has left him on the brink of reclaiming the ATP World Tour No 1 spot, sitting a meagre 120 points behind Djokovic with none to defend for the remainder of the year.
It now looks inevitable that Nadal will end 2013 as the No 1, but whether he will ever be considered the greatest of all time is still very much up for debate.