Andy Murray is looking forward to pitting his wits against Roger Federer once again at the ATP World Tour Finals.
The pair will clash for a 23rd time in the final match of Group B at London's O2 Arena this evening.
They are currently locked together at 11-11 but Federer has won all three previous meetings here, most recently in the semi-finals two years ago. Federer has arguably been the player of the year despite not winning a grand slam title and has looked impressive so far, beating Milos Raonic and Kei Nishikori in straight sets.
Murray made a poor start to his campaign in losing to Nishikori but bounced back on Tuesday with a straight-sets victory over Raonic.
That kept alive his hopes of reaching the semi-finals, and the good news for the Scot is he will know what he needs to do before the start of his match.
Raonic and Nishikori meet in the afternoon and, should the Japanese player win, Murray would have to beat Federer in straight sets to stand a chance.
Victory for Raonic, on the other hand, would mean any win for Murray would be enough, while there is also a scenario where he could lose and go through.
Even Federer is not guaranteed a spot in the last four, although a set would be enough for the Swiss.
"It will be obviously a very difficult match," said Murray.
"But it will be an exciting match, a good one to be part of. I hope I can play well. We've had some very good matches over the years."