On Saturday, Nadal will face France's Richard Gasquet, who edged David Ferrer 6-3, 6-1, 4-6, 2-6, 6-3.
That one took nearly 3 hours, and was filled with plenty of ebbs and flows, allowing Gasquet to reach his first major semifinal in six years.
Nadal, meanwhile, was never challenged even the slightest bit by Robredo, who was coming off a fourth-round upset of 17-time Grand Slam champion Roger Federer. That stunning result scuttled the possibility of a first-ever Nadal-Federer showdown in a U.S. Open.
Robredo had been 0-10 against Federer before finally beating him Monday. Perhaps that allowed Robredo to enter Wednesday believing he'd have a chance against Nadal, despite an 0-6 mark in their previous matches.
So much for that. This one lasted 1 hour, 40 minutes, and it really was over after 22 minutes. That's how long it took Nadal to dominate the first set, not only winning every game but also 24 of 29 points, including all seven that lasted 10 strokes or more.
It took Robredo 39 minutes to finally win a game, the ninth of the match, and some fans stood to applaud, probably hoping for a more competitive evening of tennis but it was not to be.
"He was up very quick,'' said Robredo, who is 0-7 in Grand Slam quarterfinals, ``and then there was nothing else to do. He was too good.''
Nadal has a 10-0 record against Gasquet, suggesting a place in the final is all but his.
"Last time I beat him, I was 13,'' Gasquet said, referring to a junior match he looked up on YouTube. ``It was a long time ago.''
When Nadal was told about that, he smiled broadly.
"I lost 6-4 in the third,'' Nadal said. ``Yeah, I remember.''
The other two men's quarterfinals are Thursday, with No. 1 Novak Djokovic against No. 21 Mikhail Youzhny, and No. 3 Andy Murray against No. 9 Stanislas Wawrinka. Murray beat Djokovic in last year's U.S. Open final.
In the women's semifinals Friday, No. 1 Serena Williams faces No. 5 Li Na, and No. 2 Victoria Azarenka plays unseeded Flavia Pennetta. It is noteworthy that the 24-year-old Azarenka is the only one of the four aged under 30.
Azarenka, a two-time Australian Open champion and last year's runner-up to Williams at Flushing Meadows, eliminated 48th-ranked Daniela Hantuchova 6-2, 6-3 on Wednesday.
Pennetta, who missed the 2012 U.S. Open because of right wrist surgery, reached her first Grand Slam semifinal at age 31 with a 6-4, 6-1 victory over Italian compatriot and former doubles partner Roberta Vinci.
They know each other's games, and each other's personalities, perfectly. While Pennetta was laid up after an operation on her right wrist last September, they spoke on the phone and sent text messages back and forth.
"She went through some ugly times,'' said Vinci, who lost in last year's U.S. Open quarterfinals to yet another Italian, her current doubles partner Sara Errani.
"But Flavia is strong-headed. She's stubborn,'' Vinci continued, rapping a wooden table with her right fist. ``She's someone who, when she wants something, she wants it all costs, which is the right way to be.''
-AP
