Mayor Boris Johnson holds up ATP World Tour Final

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Mayor holds up World Tour Final

An impromptu trip to the gents by London Mayor Boris Johnson holds up the ATP World Tour Final between Roger Federer and Jo-Wilfried Tsonga at the O2 Arena.

Federer eventually went on to retain his title in his 100th Tour final, prevailing 6-3, 6-7, 6-3 against the Frenchman.

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