Mark Petchey previews Saturday’s Group B matches at the Barclays ATP World Tour Finals, featuring Roger Federer vs Juan Martin del Potro in the day session and David Ferrer vs Janko Tipsarevic in the evening session
Mark Petchey previews Saturday’s Group B matches at the Barclays ATP World Tour Finals, featuring Roger Federer vs Juan Martin del Potro in the day session and David Ferrer vs Janko Tipsarevic in the evening session