How can an older Federer beat Nadal/Murray at Wimbledon? Murray was close last year and his demolition of Fed on the same court a few weeks later will give him a tremendous amount of confidence. And Nadal? Well let's not even go there. Fed can never beat him in a slam again. The only person he has a chance against is Nole....but to get to him he'll have to square off against either Mighty Murray or Nadal. And if he is to win it it will have to be this year or never. It's impossible. He is too old for these battles.
How to beat Murray? Have as much energy left after the early rounds, then do something like W last year. Murray can hope for wind, Fed for rain, no matter what we get both will have chances.
Nadal is a long shot for reaching the QF, given his weakness on grass. If he reaches the earth part of the tournament he'll be dangerous, still, likely less so this year than previous ones. Noone else has managed to be at his best just five months after a seven-month enforced break. We're all interested to see if Nadal will prove the exeption, but not even his fans expect it. At least not the realisticly inclined ones.