The US Open has been interrupted by rain this year, and it has messed with the schedule a bit. Rain has cut into a few days of play over the last few weeks, causing the men's final to be played on Monday.
Roger Federer would prefer that the men's finalists have a day of rest between the semifinals and final. This year Djokovic and Nadal will get a day of unplanned rest due to the rain, but that is not the norm.
The unique "Super Saturday" on the final weekend of the US Open features the men's semifinals and women's finals on Saturday, with the men's final on Sunday not being the way Federer would prefer the tournament be played.
Via the LA Times:
"The Super Saturday I think is just not feasible," Federer said, referring to the normal television-driven Open schedule.
"I'm sure that there have been many finals played here where one player had a huge advantage and I don't think that should be happening before such a huge match here. I just don't think Saturday/Sunday is feasible any longer."
The Super Saturday idea, along with the men's final on Sunday is the best way the television networks think they can get the best ratings, even if the players aren't in agreement.
Djokovic also was not pleased with the rain and scheduling, saying in an LA Times article: "It's just too much, really. It's too much."
Djokovic criticized the organizers for not having roofs or covers for the courts.
"There are some things that I don't understand," he said. "I really hope people will strongly reconsider."