Originally Posted by NadalAgassi
He did not lose a match at the biggest clay, biggest grass, or biggest hard court event of the year however. No surface, nor any opponent, was an issue for him. For Federer both clay (0 clay titles in 2006) and Nadal (1-4 vs Nadal in finals, including a final on lightning greased courts) were a major issue. As for Federer in 2005 he may have lost only 4 matches, too bad despite that he managed to win only 2 of the years 5 biggest events and make only 2 of 4 slam finals on the year somehow, LOL!
Nadal 2010 is immediately disqualified from the discussion, because he didn't even reach the semis of all 4 slams, let alone the finals of all four like Federer did.
He also lost 10 matches. Way too many losses.