Bring on Djokovic! Murray braced for final clash

Andy Murray is braced for the tantalising prospect of facing Novak Djokovic in the final of the ATP Tour Finals with the world number one ranking on the line. Djokovic has qualified for the semi-finals after winning his first two group matches at London's O2 Arena and Murray should also make the last four with two victories going into his last match against Stan Wawrinka on Friday. Murray is currently in pole position after ending Djokovic's 122-week reign at the top, but the world number two wi