On Sunday we will see a men's Grand Slam final without Roger Federer for the first time since the 2005 French Open.
That will take some getting used to - but it's good for tennis.
Novak Djokovic or Jo-Wilfried Tsonga will win the Australian Open and a new name will join the list of Grand Slam champions for the first time since Rafael Nadal won the 2005 French Open.
Djokovic's 7-5 6-3 7-6 (7-5) victory over the world number one in Friday's Aussie Open semi-final brought to an end the Swiss player's utter dominance away from Roland Garros.
The last time he suffered a similar defeat was three years ago at the hands of Marat Safin in an all-time classic semi-final in Melbourne.
Otherwise, he has not lost at the Australian Open, Wimbledon or US Open since falling to David Nalbandian in the fourth round at Flushing Meadows in 2003.
Between Federer and Nadal the major titles have been locked up in recent years and the pair of them have been knocking over records with every win.
But both men suffered comprehensive defeats in Melbourne and, while it would be very foolish to draw too many conclusions from a couple of results, the tide does seem to be turning.
Despite Federer's incredible run of success, there have always been fleeting chances for opponents and more often than not it has been the world number one's air of invincibility, as much as his brilliance, that has made the difference.
In the last week, Janko Tipsarevic has taken him to 10-8 in the fifth set, before Tomas Berdych then completely blew set points when Federer was vulnerable in the following round.
Even in last year's final, Fernando Gonzalez served for the first set at 40-15 and had his man under tremendous pressure, while the year before Marcos Baghdatis led by a set and a break.
And that man Djokovic admitted after last September's US Open final that he had blown it after leading by a break in every set and missing five set points in the first and two in the second.
In the space of four months, the 20-year-old Serb has made the step up and beaten Federer in a Grand Slam tournament.
Federer was just too inconsistent and when his serve dipped below the excellent level that has kept him going this past fortnight, there was not much to back it up.
Before I am accused of kicking a man while he's down or over-reacting to a single loss - Federer will be back and he will almost certainly win the three Grand Slam titles necessary to overhaul Pete Sampras's record of 14.
But while there will be more major wins for Federer, we may have seen the last of him scooping up three per year, and his best chance of winning all four in a year may already have passed.