Novak Djokovic (no3) faces Roger Federer (no1) in a match that could have easily been a final.The two opponents have met six times in the past and the Swiss superstar leads with 5 wins.Last year they have played four games.In Us Open ,Federe r won Djoko with 3-0(7-6,7-6,6-4),while in Toronto Djokovic was the winner with 2-1 (7-6,2-6,7-6).They have aslo played in Dubai ,where Roger won with 2-1 (6-3,6-7,6-3) and Australian Open (federer 3-0).In 2006 they have met twice ,in Monte Carlo and WG and the Swiss won again with 2-1(6-3,2-6,6-3) and 3-0 (6-3,6-2,6-3) respectively.