Unfancied Swiss Stanislas Wawrinka has shaken the order of world tennis with a dramatic Australian Open final triumph over wounded world No.1 Rafael Nadal.
Having never taken a set from Nadal in 12 previous meetings, eighth-seeded Wawrinka prevailed 6-3 6-2 3-6 6-3 after the Spaniard ended Sunday night's title match as a virtual passenger.
Nadal's movement was severely limited after he suffered a back injury early in the second set.
At one point, Nadal seemed certain to become the first man to retire from an Australian Open final since Stefan Edberg called it quits with an abdominal injury while trailing Ivan Lendl 4-6 7-6 5-2 in the 1990 championship match.
But the top seed gallantly played on and even snatched the third set as Wawrinka - contesting his first-ever major final - struggled to cope with the bizarre situation.
Wawrinka, though, pulled himself together to win the fourth set, the match and his maiden grand slam crown after two hours and 21 minutes of high drama at Melbourne Park.
After defeating second seed and four-time champion Novak Djokovic in the quarter-finals, Wawrinka - the new world No.3 - becomes the first man in 21 years to beat the sport's top two players en route to a grand slam title.
The 28-year-old is also the first player ever to beat both Nadal and Djokovic to win a major, something not even his legendary countryman Roger Federer has managed to achieve.
Wawrinka's stunning breakthrough snapped a streak of 16 majors won by either Nadal, Djokovic, Federer or Andy Murray.
All up, the so-called Big Four had won 34 of the past 35 grand slam titles stretching back to Marat Safin's Australian Open final victory over Lleyton Hewitt in 2005.
Argentine Juan Martin del Potro at the 2009 US Open was the only other man to have broken their dominance in the past nine years.
"Right now, I still don't know if I'm dreaming or not," Wawrinka said after the great Pete Sampras presented him with the Norman Brookes Challenge Cup.
"We'll see in the morning."
For Nadal, it was a shattering conclusion to the tournament after the 27-year-old appeared on the cusp of tennis history.
The top seed was bidding to join Laver - who was also on hand on Sunday night at the venue named in his honour - as only the second man in 45 years of professional tennis to win all four grand slam titles at least twice.
Nadal was also a raging favourite to climb to equal second place alongside Sampras on the all-time grand slam leaderboard with a 14th career major.
Instead, Nadal remains four slams shy of Federer's benchmark 17.
The first sign of any trouble for Nadal came when he called for the trainer in the third game of the second set.
Playing some breathtaking and fearless tennis, Wawrinka had been in command and, upset by the stoppage, demanded to know exactly why his opponent was receiving a medical time-out.
The Swiss was involved in an angry exchange with chair umpire Carlos Ramos before tournament supervisor Wayne McKewen appeared courtside to explain.
Spectators jeered Nadal when he re-entered the playing arena, but it was soon apparent the world No.1 was in genuine pain.
He was unable to serve anywhere near full capacity and was broken for a third time as Wawrinka won the second set to take control of the match.
Earlier, before Nadal's injury struck, Wawrinka had been on fire, taking the opening set in 37 minutes with some fearless and breathtaking shot-making.
Under mounting pressure at love-40 down in the opening game of the second set, Nadal received a time violation for taking too long between serves.
Seizing the moment, Wawrinka jumped on Nadal's second serve on game point, unleashed a stinging backhand return to break the top seed to love.
Nadal sought assistance from the ATP physio shortly after, but no one could have imagined the events to follow.