The entire men's and women's draws at the U.S. Open will be in action Wednesday, after rain soaked the courts in New York and postponed all of Tuesday's scheduled matches.
Combining two days of play into one would allow the tournament to remain on schedule to finish with the women's final on Saturday followed by the men's championship on Sunday.
Rain has wreaked havoc on the U.S. Open schedule in the past, with weather delays pushing the men's final to Monday in each of the past three years.
There is more rain in the forecast Wednesday, as the women are scheduled to play the quarterfinal round that includes top seed Caroline Wozniacki of Denmark, second seed Vera Zvonareva of Russia and American Serena Williams.
The men are trying to finish their fourth round, with number-two seed Rafael Nadal of Spain and fourth-seeded Andy Murray of Britain among those playing for a spot in the final eight.
The U.S. Open facility does not have any courts with a roof, unlike the Australian Open and Wimbledon. The fourth Grand Slam, the French Open, plans to feature a retractable roof on its main court by 2016.