About Roger, i agree he still has some gunpowder in him, enough to get him maybe 2 more slams i hope. But yes, he has been beat by guys who are well know to be "party crashers" like Tsonga and Berdych, no disrespect for them, they are huge players, but every single time they assume the role of the "favourite" guy then they choke up.
Also Federers curse is happening, two players that beat him, two players that have to retire because of injuries... suspicious
Rafa is as good for putting the preasure to the other guys, as good as he is playing tennis! This year Rafa looks more human than ever, Djokovic has gotten to his head as he did to Rogers head... what comes around goes around... I think that more than practicing, because Rafa has the game to beat Djokovic at least once in this year, but his head is playing games with him, and thats what tennis is all about, mind games all things being equal, mind games make the difference.