Although Nadal is 8-2 vs Federer, Nadal has a huge NASTY blister on left hand.
From ESPN;
Upper hand goes to Rodger Federer, and that's why I bet: Federer +2.5 +106
From ESPN;
What began as an innocuous callus on his left hand turned into a gaping wound for Nadal against Grigor Dimitrov in the Australian Open quarterfinals. It eventually produced a pool of blood and, in some minds, represented a potential field-leveler. It remains a painful, performance-impeding blister, all because of the repeated rubbing between Nadal's palm and his Babolat AeroPro Drive.
Upper hand goes to Rodger Federer, and that's why I bet: Federer +2.5 +106