ATP World Tour Finals

British number one needs time to adapt to clay and could ditch London showpiece.

The confrontation between Federer's wife and Wawrinka is revealed on the eve of the Davis Cup final

The back injury which forced Federer's withdrawal from ATP Tour Final affected by Wawrinka talks

The 33 year old pulls out to give Novak Djokovic a third straight title via walkover

Novak Djokovic faces Roger Federer in the final of the ATP World Tour Finals in London

Federer comes back from the brink before defeating Wawrinka 4-6 7-5 7-6

Roger Federer faces Stanislas Wawrinka in the second semi-final at the ATP World Tour Finals

Wawrinka reaches second semi-final at season-ending tour finals

Novak Djokovic faces Kei Nishikori in the first semi-final at the ATP World Tour Finals

Djokovic sets up semi-final meeting with Kei Nishikori and sends Tomas Berdych crashing out

Stanislas Wawrinka meets Marin Cilic in the evening session on day six at the ATP World Tour Finals

Federer humiliation emphasises Murray's challenge of returning to the summit of men's tennis

Novak Djokovic faces Tomas Berdych in the afternoon session on day six at the ATP World Tour Finals

Federer cruises through to the semi-final with 6-0 6-1 win in London

Murray must beat already-qualified Federer in two sets to reach the semi-finals after Nishikori win

Roger Federer takes on Andy Murray in the evening session on day five at the ATP World Tour Finals

The Canadian will be replaced by David Ferrer for final round robin match against Kei Nishikori.

Djokovic avenges defeat in Australia Open quarter-final with straight sets victory

Berdych strolls to 6-3 6-3 victory in London to keep semi-final hopes alive

Novak Djokovic takes on Stanislas Wawrinka in the evening after Tomas Berdych faces Marin Cilic

Murray survives an early exit after prevailing 6-3 7-5 over the Canadian at the O2 Arena

Federer wins 6-3 6-4 in comprehensive fashion at the O2 Arena in London

Roger Federer takes on Kei Nishikori while Andy Murray faces Canadian Milos Raonic on day three

The defending champion begins defence with 6-1 6-1 win

The world No.3 cruises to victory for the loss of just two games in London

Defending champion Novak Djokovic takes centre stage on day two at the O2 Arena in London

Federer powers to 6-1 7-6 win in 88 minutes

The Japan player claims a 6-4 6-4 opening round robin win at the O2 Arena

Andy Murray faces Kei Nishikori and Roger Federer takes on Milos Raonic on the opening day in London

Murray returns to British shores for the first time since sparking outrage by backing the 'yes' vote.