The USTA also is considering keeping the men's title match in its traditional Sunday afternoon spot, but moving their semifinals to Friday.
The USTA board of directors has approved exploring various scheduling options.
"We're just getting into this process," Curley said, "and right now, everything is on the table."
The US Open, played at Flushing Meadows in New York, has boasted what it calls "Super Saturday" since 1984, with two men's semifinals and the women's final all played on that day, followed by the men's final Sunday. Wimbledon, the French Open and Australian Open follow another pattern: women's semifinals Thursday, men's semifinals Friday, women's final Saturday, men's final Sunday.
"The sport has become much more physical over the years, to the point where players feel very strongly that they need to have a day between the semis and the final," Curley said. "While the players are an integral part of the US Open, it's one aspect we need to take into consideration, along with onsite fans, TV viewers, corporate sponsors, television partners, both domestic and international. It's a Rubik's Cube, since so many variables need to be taken into consideration."
More on tennisChanges might result in the loss of one or two sessions during the US Open - under the present format, tickets are sold for 26 sessions, some during the day, some at night - and a change in TV rights fees received by the USTA.
"It's fair to say that this type of change would have a negative financial impact on the USTA, and that's another reason why we're being very thoughtful in this process. We're talking about millions of dollars," Curley said.
He acknowledged such losses "would have to have an impact" on any future plans to add a roof to the tournament facility.
CBS has aired the U.S. Open since 1968, and its current contract runs through 2014. CBS Sports spokeswoman Jen Sabatelle confirmed the network has been approached about a change.
"We have an ongoing dialogue with the USTA. They have been great partners, and we will work with them to come up with a schedule that makes sense for all parties," she said.
Curley said he hasn't talked about a potential schedule switch with the International Tennis Federation, which oversees the Grand Slam tournaments, because "the USTA, not the ITF, runs the US Open."
While calling the scheduling issue a priority for the US Open, Curley said he doesn't know when there will be a final decision. It would need to come by April, at the latest, if there's going to be a change in 2012, when the tournament is supposed to run from Monday, Aug. 27, to Sunday, Sept. 9.
"It might not happen in '12. It might happen in '13. I just want to be clear that the goal is to get this done," Curley said.
In a statement, Federer said: "It's good news that they're reviewing the US Open schedule. It's the right move for our sport. I am pleased that the USTA is listening to the players, and I am very encouraged with these developments."