Federer's sliced backhand is also a big factor in his tactical repertoire.

He can use it to defend cross court by changing the pace and height of the ball and disrupting his opponents rhythm to slow the opponent down. With big hitters like Andy Roddick, this is a huge tactical advantage.

He also uses it to return serve, especially on the advantage side, and during rallies he often chooses to play slice short-angled or short-straight. This makes the ball stay very low tempting the opponent to come up to the net.

Then Federer digs into his box of tricks and comes up with one of his many passing shots.