I'm asking because watching the news report this morning I suddenly realised the 2 Grand slams he failed to win this year were on hardcourt. Although he still made the finals in both AO and US he failed to close it out, and he hardly makes a fuss in hard court Masters anymore. Is he losing his touch on hard court or has it been his worst surface? I'm pretty sure it isn't his worst surface. It must be his second best surface at least, after Grass.