Roger Federer withstood an early barrage to see off Andy Murray in straight sets and reach the final of the ATP World Tour Finals in London.
The Swiss will try for a seventh season-ending title on Monday after ending the best season of Murray's career with a 7-6 (7-5) 6-2 win, reports the BBC.
Federer will play world number one Novak Djokovic in the final.
Murray heads into the off-season at the end of a memorable a year that saw him win the US Open and Olympic gold.
"I think he played well," said Murray of the opponent who recovered from one set adrift to beat him in this year's Wimbledon final.
"I didn't think it was an incredibly high standard in terms of length of points - there were a lot of quick points.
"Once he gets ahead, he's incredibly hard to stop. He tends to play better and better when he gets up. I feel like I gave him that advantage at the beginning of the second set."
And reflecting on his season, Murray added: "It's been an incredibly positive year. I would have love to have finished the year on a win, of course, but that didn't happen. But for me it's been the best year of my career by a mile."
It had looked as though the British number one might be able to deliver his home crowd another glorious sporting moment to finish off an extraordinary 2012.
He began in aggressive fashion, while Federer was spraying his usually devastating forehand all round the O2 Arena, with an error on that side handing Murray an immediate break.
It only served to heighten a feverish atmosphere as Federer's huge army of fans more than held their own among the 17,800 spectators.