World number one braced for final clash with Djokovic

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.
If the old rivals finish top of their groups, they wouldn't be able to meet before Sunday's final.
That is a thrilling proposition given the final would decide not only the winner of this season's Tour Finals but also the holder of first place in the year-end world rankings.
Murray is currently in pole position after ending Djokovic's 122-week reign at the top, but the world number two will regain first place if he wins the Tour Finals for a record-equalling sixth time.