Juan Martin del Potro and Roger Federer line up for the men's singles final at Flushing Meadows, which takes place on the Monday after rain forced an extra day
There is plenty of pomp and ceremony on the 15th and final day of the 2009 championships
Actor Bruce Willis is among the celebrities keen to see the five-time champion take on the highly-rated contender
The Federer supporters' box is a star-studded affair, with Vogue editor Anna Wintour and pop/rock couple Gwen Stefani and Gavin Rossdale in attendance as usual
The sun is going down as the final gets under way at 4.20pm local time in New York
Federer, playing in his 22nd Grand Slam final, makes a flying start to his attempt at a sixth straight US Open win as he takes the first set
A nervous Del Potro cannot get his game together in the early stages and soon finds himself a set and a break down
After dropping the second set in a tie-break, Federer fights back from a break down in the third to move ahead
Del Potro cannot believe it as he double-faults twice in a row to hand the third set to Federer
The fourth set comes down to another tie-break and both players are unhappy as there is confusion over the use of Hawkeye
Del Potro earns three set points and converts the third to level at two sets all and take the US Open final into a decider for the first time in 10 years
The sun dips behind the stand on the giant Arthur Ashe Stadium as the final becomes one of the longest ever at Flushing Meadows
Del Potro gets the early break in the fifth set and looks confident on serve as he closes in on victory
Federer can see the title slipping away as he makes little impression on Del Potro's service games in the closing stages of the decider
Del Potro collapses on the Arthur Ashe court as he completes a magnificent 3-6 7-6 (7-5) 4-6 7-6 (7-4) 6-2 victory
Del Potro travels a well worn path but still needs the help of the spectators as he heads into the stands to celebrate with his supporters
Federer must wait for his 16th Grand Slam title and looks on as Del Potro collects his first
Del Potro is only the second Argentine to win the title following Guillermo Vilas's victory of 1977
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