That was a good read Shankar, thanks for sharing. 
Nice to see that Fed & Annacone are a good fit, I've always thought of Paul as a great coach for aggressive minded players.
concurred with that bold part but i never thought federer was an aggressive minded player, monsterman.......he is actually defense minded.......i think that is the reason why he is not really able to implement on court annacone's aggressive strategies against nadal and djokovic......
he is a defensive baseliner who has a really good serve.......he just defends better than everyone on the tour except nadal and djokovic at the moment.......
when you have a good serve, it just helps the first shot that much more and accounts for easy and quick service holds.......i think people take that for aggression but to me nothing apart from his serve is aggressive.......
sampras used to really force himself on the opponent and used to attack a lot even on the return games.......the 'chip and charge' stuff, aggressive returns, going for the lines etc......fed rarely ever does that and he just defends and defends and defends until the other one runs out of patience.......nadal is simply better than him in defence and hence those results.......
actually fed's defense is better than even djokovic's but recently djokovic took his movement to another level but he is tactically not as great a defender as rafa.......