Semifinal Preview : Barclays ATP World Tour Finals

As the yearend championship in London's O2 Arena draws to a close, an unusual semifinal line-up welcomes the tennis fans across the world. Defending champion Novak Djokovic's unexpected exit, coupled with Andy Murray's loss to the number game left the ATP Season Finale with a new set of 'Gladiators', who will do anything to claim the top honours.

With Something-Old, Something-New and Something Lucky shining on the court's today, here is our assessment of the two semifinal matches that get underway in just a few hours from now -

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