Murray chases ATP semi-final spot

Andy Murray knows that only a straight-sets win for Jo-Wilfried Tsonga will stop him from reaching the semi-finals at the ATP World Tour Finals. The Briton goes into the final round of Group A matches in second place, having beaten Tomas Berdych and lost to top seed Novak Djokovic. Djokovic's win over Berdych eases Murray's task to mean that he only needs a set against the Frenchman. Murray takes on Tsonga at 19:45 GMT, following Djokovic's win over Berdych. All four men go into iday still able to secure one of the two semi-final places on offer in the group, and there are 10 different qualification scenarios. It is a situation Murray has experienced before, notably in 2009, when he won two group matches but was still eliminated on the percentage of games won.