Kei Nishikori passes Roger Federer with an unexpected old school backhand down the line in London (ATP Finals 2015, Masters).

Fabio Fognini is inimitable. The Italian had fun by pulling down the chair umpire's sock during his last match in London.

Roger Federer uses every shots of the tennis and every angles of the court to win this point against Kei Nishikori in London (ATP Finals 2015, Masters).

Great point from David Ferrer against Stan Wawrinka in London (ATP Finals 2015, Masters). First he defends superbly well and then makes the difference with a perfect small forehand.

Andy Murray wasn't maybe totally satisfied by his haircut or more probably some of his front hairs were disturbing him. He made a little on-court adjustment to it during his match against Rafael Nadal in London (ATP Finals 2015, Masters).

Dominated by Tomas Berdych in this point of the beginning of their group match in London, Kei Nishikori turns his defense into offense thanks to a perfect lob.