LONDON - When injured American Andy Roddick was caught on camera watching the action at the ATP World Tour Finals, the applause that rang around the cavernous O2 Arena spoke volumes for his popularity in London.

No wonder the world number six is already setting his sights on the 2012 London Olympics when the tennis event will be staged at the All England Club, scene of Roddick's epic Wimbledon final against Roger Federer this year.