Men's round-up - day 11
Lleyton Hewitt gave further evidence that he is getting back to his best with victory over in-form Paradorn Srichaphan at the US Open.
The Australian was in typically fired-up mood as he won 4-6 6-2 6-4 6-2 in the unfamiliar surroundings of court 11 to reach the last eight.
After struggling to find top form for much of the year, the 2001 champion has looked rejuvenated since arriving at Flushing Meadows.
"At the moment, I still believe I'm good enough to win," said Hewitt.
"I felt I went up another gear and I had to against a top player, a guy who can really beat anyone on any given day. We've seen that in the last few years in Srichaphan."
Hewitt will take on third seed Juan Carlos Ferrero in the last eight after the Spaniard held his nerve in a tight encounter with Todd Martin.
Ferrero looked on course for an easy win, taking the first two sets before Martin battled back to force a decider, but the American could not complete the job and went down 6-2 6-4 3-6 5-7 6-3.
Agassi v Coria
Ferrero v Hewitt
Schalken v Roddick
El Aynaoui v Nalbandian
"I was very confident in the fifth," said Ferrero. "I was playing good. "I fought all the way in the fifth set to get the match. I think I did pretty well."
Fifth seed Guillermo Coria booked a quarter-final meeting with Andre Agassi after sweeping past Jonas Bjorkman 6-2 6-3 4-6 6-2.
"It is going to be tough because I am playing against my idol in his favourite tournament, at his home," said Coria of his next match.
David Nalbandian had a superb win over second seed Roger Federer and next meets Younes El Aynaoui, who beat seventh seed Carlos Moya 7-6 7-6 4-6 6-4.
El Aynaoui is fast becoming one of the most popular players with the public as he is regularly involved in epic macthes.
And the Flushing Meadows spectators were firmly behind the Moroccan against Moya.
"There's not many players have a crowd as enthusiastic as this," said El Aynaoui.
"I apologised to Carlos afterwards if they disturbed him but he told me it was fine. They were definitely very helpful."
Surprise package Sjeng Schalken remains on course to repeat his 2002 semi-final appearance after seeing off eighth seed Rainer Schuettler 6-1 4-6 6-3 6-4.
Schalken will face fourth seed Andy Roddick in the last eight.