Day 9 at the 2011 U.S. Open was canceled because of rain.

The men were scheduled to wrap up the fourth round with four matches on Tuesday, but inclement weather took care of that at the USTA Billie Jean King National Tennis Center.

Second-seeded Rafael Nadal, fourth-seeded Brit Andy Murray and American star Andy Roddick were among those on the Day-9 schedule. The former world No. 1 and reigning U.S. and French Open champion Nadal was set to face unseeded Gilles Muller of Luxembourg, while the former U.S. Open runner-up Andy Murray was supposed to meet American Donald Young and a 21st-seeded Roddick was slated to battle fifth-seeded Spaniard David Ferrer. Nadal beat Novak Djokovic in last year's finale in Flushing, while Murray was the 2008 runner-up here to Roger Federer and the former No. 1 Roddick captured his lone Grand Slam title in the Big Apple back in 2003.

Also washed out on Tuesday was a match between 12th-seeded Frenchman Gilles Simon and 28th-seeded American John Isner.

Resumption of play will have to wait until 11:00 a.m. EDT Wednesday, with rain in the forecast once again.