28 November 2011 Last updated at 18:43

Roger Federer thanks London crowd after 70th title win

ATP World Tour Finals winner Roger Federer thanks the London crowd for their support after claiming a record sixth season-ending crown by defeating Jo-Wilfried Tsonga at the O2 Arena .

Federer raced to the first set in 35 minutes and then served for the match in the second before the Frenchman fought back and won the tie-break to set up a decider.

The 16-time Grand Slam winner proved too strong in the third set, eventually taking it 6-3.