Former world No 1 focused on rebounding from mediocre year

Looking back is a waste of time for Roger Federer.

While tennis fans and pundits are obsessed with his below-par performances at the four majors this year which have left him in danger of missing the cut for the season-ending ATP finale for the first time since 2001, Federer has already put a positive spin on his 2013 trials and tribulations.