Jo-Wilfried Tsonga takes on Roger Federer in the final.
In this first semi-final, Roger Federer plays David Ferrer.
Jo-Wilfried Tsonga and Mardy Fish battle it out at London's O2 Arena.
Coverage of the afternoon singles match. Presented by Andrew Castle with Tim Henman.
Britain's Andy Murray and Spain's David Ferrer battle it out at London's O2 Arena.
Coverage of the afternoon singles match. Commentators are Andrew Castle and Tim Henman.