They only do that to ensure that the final happens at the scheduled time. I don't think there's any danger of that this year so it is what it is. Also they have to try to protect CC. Sucks for the players. I think Novak has had some tough scheduling, and Roger has been treated perhaps a bit too nicely. But... it's market forces guys. Folks want to see the old man play. It would be stupid to put him even on number 1 court because the premium for CC would seriously piss off the punters who don't get to see him. People rail about it I know, but Wimbledon wants to make money. Had Murray still been in the draw then they might possibly have been able to justify doing something like that