A complete rain-out at the US Open forced tournament officials to postpone the men's championship match to Monday for the second year in a row.
Six-time Grand Slam champion Rafael Nadal and Chilean 11th seed Fernando Gonzalez on Friday waited hours through a steady downpour before the completion of their suspended quarter-final from Thursday night was pushed to today afternoon.
That postponed the semi-finals to Sunday and the final to Monday.
World number one Roger Federer defeated Andy Murray for his fifth US Open title in a row last year in the first Monday men's final since 1987, when Ivan Lendl defeated Mats Wilander for the crown.
Third-seeded Spaniard Nadal was aided by the delays, having aggravated an abdominal muscle strain on Thursday night while seizing a 7-6 (7/4), 6-6 (3/2) advantage before play was halted.
Federer, the Swiss 15-time Slam champion, and Serbian fourth seed Novak Djokovic are set for one men's semi-final while Argentine sixth seed Juan Martin Del Potro awaits the Nadal-Gonzalez winner in the other.
Nadal, who hopes to complete a career Grand Slam with a US Open title, was also hit by rain last year when his US Open semi-final against Britain's Murray was halted in the third set and finished on Sunday.