Roger Federer vs Novak Djokovic: Federer looks to go back to the future in Wimbledon final

Roger Federer knocked out Pete Sampras in the seven-times champion's penultimate Wimbledon, beat Andre Agassi in the American’s last Grand Slam final, saw his contemporary Andy Roddick into retirement and is still challenging for the biggest prizes at a time when Rafael Nadal, the young upstart who for years challenged his position at the top, has begun to look like a spent force.