Roger just has to keep working hard and come back stronger and fitter next year.
I think he can do some damage on grass. he ran out of steam this year at Wimbledon.
he played 10 sets in his last 2 matches there. you just cant afford to let that happen at a slam. it will take its toll on you.
I just don't think he has it in him to win that many 5 setters on today's slow grass. 3 setters or fast grass. yet.