the tennis world is indeed a different world than a year ago. Last year at the us open it seemed like Roger didn't really have to exert himself to win the title. I don't know if he even lost a set. This year we find both finalists having lost a set in the semis. Roger has lost 3 sets total and Andy has lost 5. Neither seems a sure bet.
Roger may win to get within 1 title of Pete Sampras. He could just as easily lose. Murray is not a deer in the headlights. This may be his first Grand Slam final but he has been expecting this for a while. He came to this tournament to win not just show. He bested Nadal, who at number 1, perhaps was a little worn out from Beijing. He has a good record against Roger. If Andy pushes into 4 or 5 sets the pressure will be on Roger. This could be a great match.