I don't play tennis, so I am wondering about this. Whenever an opponent hits a ball to Roger's forehand and is up at the net, Roger always goes cross court, and about 90% of the time it ends up as a winner. For those who watched the match between him and Grosjean at this year's SF Wimbly would know what I mean.
Now, from a spectator point of view, after seeing him hit so many cross court winners, even I would expect it coming when I come up at the net, yet every time Roger just passes them.
Why is that?