I cant see Nadal putting up enough points the second half of the season for a real fight. Last year he complained of being tired after his great run off form, I think the same is probably going to happen this year.
Based on Nadal`s hardcourt form at Indian Wells TMS this year-->> where he crushed both Roddick & Djokovic, then it looks like he`s becoming a better all-court player
***Expect RAFA to push FED harder for the #1 ranking this year than in previous years
Seriously wouldn`t be surprised if #1 is decided at Shanghai TMC~~ thankfully played on a very fast indoor court