World number one Novak Djokovic and five-time champion Roger Federer set up a US Open semifinal blockbuster on Thursday as the rain-ravaged event opted for a fourth successive Monday men's final.
Top seed Djokovic, the runner-up in 2007 and 2010, booked his place in a fifth successive semifinal when Serbian Davis Cup-winning teammate Janko Tipsarevic retired with a left thigh injury, thus claiming his 62nd win of 2011
Djokovic, who was 7-6 (7/2), 6-7 (3/7), 6-0, 3-0 ahead at the time, will face Federer for the fourth year running after he beat Frenchman Jo-Wilfried Tsonga 6-4, 6-3, 6-3.
The winner of that tie will play in a Monday final after besieged organisers surrendered their desperate attempts to shoehorn the remainder of the tournament, which had seen Tuesday and Wednesday washed out, into four days.It will be the fourth successive US Open semifinal meeting between Federer and Djokovic and first since the Swiss ended the Serb's 43-match winning run at the French Open in June.
Murray made the last eight with a 6-2, 6-3, 6-3 win over America's Donald Young.
2003 champion Andy Roddick completed a 6-3, 6-4, 3-6, 6-3 win over fifth-seeded Ferrer and next faces Nadal. Murray's reward is a quarter-final match against giant American John Isner.
serena-woz last four will be classic
World No. 1 Caroline Wozniacki and three-time champion Serena Williams set up an exciting semifinal at the US Open after they posted convincing wins in the quaterfinals.
Wozniacki got past 10th-seed German Andrea Petkovic 6-1, 7-6 (5) in 1 hour and 40 minutes, including a hard-fought 73-minute second set.
The 28th-seed Williams overpowered Russian Anastasia Pavlyuchenkova 7-5, 6-1 and ended the contest with her seventh ace.
21-year-old Wozniacki will challenge Williams for the third time and is seeking her first ever win over the mighty American who is currently riding a 17-match overall winning streak including titles in Stanford and Toronto. The two stars haven't met since 2009.
Vera Zvonareva, last year's runner-up and the No. 2 seed, succumbed to Australian Samantha Stosur 3-6, 3-6 in another quarterfinal. "When you are playing well, it just kind of flows," said Stosur.
Stosur , last year's French Open runner-up, will now appear in her first-ever semifinal at Flushing Meadows and she will play 92nd-ranked German Angelique Kerber on Saturday. The 23-year-old made it to her maiden Grand Slam semifinal when she got past Italian Flavia Pennetta 6-4, 4-6, 6-3.