The women's tennis tour supports a proposal to shift the Australian Open to March.
Tournament officials are considering two options for a date change by the 2007 Open: moving the tournament from its mid January slot to a week later, or delaying it until March.
Although a move to March has ramifications for U.S. hard-court events in Indian Wells and Miami, the WTA has joined the International Tennis Federation in supporting that option.
"There's a lot of complications, a lot of issues, and at the end of the day my view is that the Australian Open has to make that call," WTA Tour chief executive Larry Scott said.
No decision has been made by Tennis Australia, although Scott will meet Open officials over the weekend and the Grand Slam Committee will discuss the issue Thursday and Friday.
Andy Roddick and Robby Ginepri were picked by captain Patrick McEnroe on Tuesday to play singles for the United States against Austria in the first round of the Davis Cup next month.
McEnroe also selected twins Bob and Mike Bryan to play doubles, and Mardy Fish as a backup singles player.
Ginepri, 21, earned a chance to play Davis Cup singles for the first time by reaching the fourth round at the Australian Open _ his best showing at a Grand Slam tournament.
He and Fish were selected ahead of James Blake and Taylor Dent for the best-of-five series on Feb. 6-8 in Uncasville, Conn.
"Robby has stepped up his game to the next level. He's had very consistent results," McEnroe said on a conference call from Australia. "He's very solid. He had a very good tournament here. His ranking is continuing to improve, and I felt like this was an excellent opportunity for him."
Ginepri entered the Australian Open ranked 33rd, but that will rise now. Fish was 21st, Dent 28th and Blake 39th.
Roddick reached the Australian Open quarterfinals, where he lost to Marat Safin on Tuesday, a result that will cost the American his No. 1 ranking.