If Federer could find a way to make his returns more consistent then he'd be back to absolute prime levels. He's winning 60% of points from the second serve this year and holding 91% of the time. He breaks serve 28% of the time, which is below some earlier years where he was above 30%.
"If you're gonna be 5'8'', you better not be bald, fat and drunk whilst asking to be put in the 'all-time great sportsman' conversation." - Zoid