• World number one Novak Djokovic walked out on court to take on Juan Martin Del Potro in the first semi-final of the ATP World Tour Finals in London.
  • Del Potro used his forehand well to take the opening set
  • However, Djokovic hit back to send the match into a decider
  • Djokovic stepped up a gear in the final set as he moved to the brink of victory
  • Del Potro's body language suggested he knew the writing was on the walls
  • The Serbian soon polished off a 4-6 6-3 6-2 victory to advance to the final against either Andy Murray or Roger Federer
  • India's Mahesh Bhupathi and Rohan Bopanna won the first doubles semi-final
  • Jonny Marray and Freddie Nielsen were looking to join them in the final
  • But it was Spanish duo Marc Lopez and Marcel Granollers who triumphed
  • Andy Murray walked out on court to take on Roger Federer in the semi-final
  • The British number one broke early on
  • But Federer hit back in what was becoming a tightly-contested opening set
  • And it was the Swiss ace who edged it on a tie-break
  • Murray shows his frustration as his opponent took control
  • Federer stormed through the second set, taking it 6-2 to book his place in the final

ATP World Tour Finals - Day 7

World number one Novak Djokovic walked out on court to take on Juan Martin Del Potro in the first semi-final of the ATP World Tour Finals in London.