Tuesday 5 November 2013 09:10, UK
Juan Martin Del Potro may have been below his best in his win over Richard Gasquet, says Greg Rusedski, but his self-belief could take him far at the ATP World Tour Finals.
Watch every session of the ATP World Tour Finals - which run from November 4-11 - on Sky Sports. Click here for coverage details. You can catch all the action from the ATP World Tour Finals with a Sky Sports Day Pass. For more information click here
