I'm also curious who do you see as potential USO winners from now on seeing how Nadal will be 28, Andy and Novak 27 next year...
Nadal, Murray, and Djokovic will all decline drastically at some point
whether it's 27 or 30, it will happen
do not live in delusions, it happens to every champion
and to a comment on the last page by Hipolymer, even if Djokovic somehow 'wills' himself to another 5 or whatever hard court GS's, as others have frequently mentioned in this thread, Roger destroys all hard court records from winning percentage to overall title to World Tour Finals
too much of a disparity between him and anyone now. maybe if Djokovic could keep his hard court stats up to this age and start back over at 18 he would have a chance...