He certainly did play aggressively. He's been content to hit soft FH's to his opponents' FH's from the middle of the cout of late, but today, he attcked with that shot. His FH combos reminded me of his aggressive FH's of 2004, early 2005. His BH was also very good as he didn't offer up too many short balls off of the CC drive and his drive DTL was better than it has been during he summer.
Canas served a lot to the Fed FH on the AD court for some reason, something that most players hardly ever do (other than Blake who doesn't seem to have much of a gameplan when serving) and Fed's FH return from the AD end is really good as he tries to set up the return to the AD corner, FH to the opponent's FH, inside out FH or volley winner combination. He had some nice BH drive returns as well.