Roger Federer will face world No.1 Novak Djokovic in the final of the ATP World Tour Finals after dispatching Andy Murray in straight sets at the O2 Arena in London.
Following his three-set win in the Olympic final three months previous, Murray took an early break against a lacklustre Federer.
But the world No.2 broke back and then took the first set tiebreak 7-5, before breaking the US Open champions twice on his way to comfortably taking the second 6-2 to set up a fifth meeting of 2012 with Djokovic.
Both players came into their fifth meeting of the year, their third in the city of London with identical records from the round robin stage, this time fighting to face Novak Djokovic in Monday's final.
It was Murray who came out of the traps the quickest, putting the Federer forehand under early pressure, strain the Swiss failed to deal with, as he found the net in the opening game to set up two break points.
And it was Federer's trusty forehand weapon, which again let him down in the second break point, crushing the ball into the net as Murray stole the early initiative.
Federer was forced to back peddle in his next service game as Murray continued his aggressive stance, as a stinging backhand return brought up deuce.
The world No.2 escaped, but his powers of recovery required an airing in his very next service game, as Murray scuppered a chance to forge a double-break lead after being 0-30.
Such were the regularity of the opportunities for Murray in an enthralling first set they were bound to come back to hurt him and sure enough in the eighth game, Federer's exposed the Brit's backhand and created the chance to break back.
Murray's produced a long backhand and the momentum suddenly switched; Federer looking the more comfortable on serve, as he had done during his opening match against Janko Tipsarevic, putting the Olympic champion on the ropes.
The pair were however able to serve out for a tie-break at the end of the first set, and it was Murray who in similar fashion to the start of the match, took the early lead.
However once the 3-1 mini break had been erased, Federer turned aggressive on the Murray serve, storming forward to set up two set points.
A deep forehand might have saved the first, but Federer wasn't to be denied as he took the opening set 7-6.
The 17-time grand slam champion then put one foot in the final by capitalising on Murray's inability to close out his own service game when 40-0 up, to break in the third game.
In contrast to previous meetings between the two, Murray was failing to create break point opportunities with any regularity, and following a love service game from Federer, the No.2 seed took a double break in the second, with a delicious cross court dipping backhand.
Serving for the match, he required just one match point to book his place in the final against Djokovic; a fitting end to a 2012 season which will see the top two players in the world do battle in the final match of the year.