The humidity of the past week temporarily relents, although the sunshine remains as Slovakia's Dominika Cubulkova attempts to qualify for only her second ever Grand Slam quarter-final against Svetlana Kuznetsova
The anguish of losing the first set on a double break is palpable as Russian Kuznetsova, who won the women's title at Flushing Meadows in 2004, faces a tough task going into the second set on Arthur Ashe
Cibulkova squanders two match points in the second set as Kuznetsova fights back to take the match into a second-set tie-break, but the Slovakian holds on for a confidence-boosting win
Over on Louis Armstrong, Richard Gasquet is stretched around court by compatriot Gael Monfils as both men aim to become the first Frenchman to reach the quarter-finals since Arnaud Clement in 2000
The athletic Monfils throws himself all around court as Gasquet attempts to find a successful tactic to break down his opponent's impressive defensive game, but instead finds himself 2-0 down going into the third set
But, despite taking a 5-2 lead in the third, Gasquet is blown away by his close friend as Monfils wins five successive games to wrap up the match in just over two-and-a-half hours
Britain's Laura Robson, who missed out on the main draw, books her place in the last 32 of the junior competition with a thumping 6-2 6-1 win over Slovakia's Anna Karolina Schmiedlova
Novak Djokovic quickly finds his rhythm early on against home favourite Mardy Fish, who has never beaten the Serb in four previous meetings, and wins the first two sets with little trouble
And the third seed wraps up the third set 6-1 to reach his sixth successive Grand Slam quarter-final and extend his excellent record against Fish
The third match on Arthur Ashe sees 2006 winner Maria Sharapova come up against top seed Caroline Wozniacki
Wozniacki controls the match from the outset and, despite the occasional slip, moves to the brink of a first ever win over Sharapova
Wozniacki completes a 6-3 6-4 victory over the 2006 champion as she moves one step closer to a return to the final
Robin Soderling continues his quiet progress through the draw, recovering from dropping the first set to beat Albert Montanes in four on Louis Armstrong Stadium
Germany's Andrea Petkovic makes her debut on Arthur Ashe Stadium for a night session against Vera Zvonareva and quickly finds things going very worng
Zvonareva competely dominates the match, winning 6-1 6-2 in little over an hour to secure a quarter-final place
Actress Cameron Diaz (left) is among the famous faces on Ashe for the arrival of five-time champion Roger Federer and Jurgen Melzer in the final match of day eight
Federer makes a strong start to his fourth-round match, breaking serve twice on his way to sealing the first set
Singer Gwen Stefani and Federer's wife Mirka look on as the world number two has a bit of luck with two net cords before winning the second set tie-break
Federer comes back from a break down in the third set to complete a 6-3 7-6 (7-4) 6-3 win, and says: I haven't lost a set so obviously I'm really happy"
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