• Two-time defending champion Roger Federer begins his ATP World Tour Finals campaign against Janko Tipsarevic
  • The Swiss maestro makes a fast start by taking the opening set 6-3
  • Tipsarevic struggles to stay in the game as Federer continues to dominate
  • Federer races through the second set, taking it 6-1 to complete an easy victory
  • Earlier in the day Frederik Nielsen and Briton Jonathan Marray made their way into the O2 Arena for their opening doubles match.
  • Their opponents are Rohan Bopanna and Mahesh Bhupathi.
  • Wimbledon champions Nielsen and Marray are quickly into their stride and take the first set 6-4.
  • The second set is even tighter and goes to a tie break.
  • It goes the way of the Indian duo to take the match into a champions tie break.
  • Nielsen and Marray celebrate after winning a dramatic deciding set 12-10 to delight the London crowd
  • In the evening match, Juan Martin Del Potro battles it out with David Ferrer
  • The Spaniard wins the opening set 6-3
  • Del Potro hit back to force a decider
  • Ferrer proves too good for Del Potro

ATP World Tour Finals - Day 2

Two-time defending champion Roger Federer begins his ATP World Tour Finals campaign against Janko Tipsarevic