World number two Roger Federer anticipates a difficult matchup against Andy Murray in the ATP World Tour Finals on.
The blockbuster match will take place at 20:00 GMT at the O2 Arena in London on Thursday. Federer only needs one set to seal a place in the semi-finals but Murray could lose and still qualify.
The Scot has suffered from a loss of form due to the back injury and surgery he underwent last September. The injury saw the former world number two slip out of the top ten rankings for the first time in six years.
Federer Praises Murray
Federer, however, believes that his opponent is finding the form of old after finishing the year strongly with a string of victories.
Federer is quoted by the BBC as saying: "I'm sure his belief is higher now again. Beating David Ferrer twice, and Marin Cilic as well in Beijing, Jo-Wilfried Tsonga at the US Open - those are the matches he needed to win down the stretch at the end of the season, which he did."
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Both Federer and Murray have played each other 22 times sharing a record of 11-11. However, the Swiss won both of their recent matches in 2014 along with having a 100 per cent record against the British number one at the O2 Arena.
Federer has two wins in two this week beating Japan's Kei Nishikori and Canada's Milos Raonic. Murray suffered a defeat in straight sets to Nishikori but successfully bounced back to winning ways with an impressive win over Raonic.
Taking After Coach
Andy Murray will look to draw upon the experiences of his coach Amelie Muaresmo. The France-born player similarly lost her first match in an ATP World Tour and went on to win the tournament.
The former women's World number told BBC Sport: "I'm trying to share some experiences that he can relate to. He's okay; he's good physically. Mentally, he's ready for what's coming up on Thursday evening."