Underdogs aim to ruin 'dream' sport ROUND-UP.
But both would be happy to be cast as the villain of the piece by winning their respective semi-finals at Flushing Meadows today.
Djokovic takes on Federer for the fourth year in succession in New York, having lost to the Swiss in the 2007 final and the semi-finals in 2008 and 2009.
Speaking about the prospect of a Nadal-Federer final, Djokovic said: "Of course, as the two best players in the world they are the most dominant in the last five, six years.
"They are the favourites to get into the finals and I'm sure that the crowd wants them in the finals. But I will try to not make that happen."
Youzhny would not have any compunction about ruining Nadal's bid for a Grand Slam.
"Yeah, I'm ready to be the bad person," joked the 28-year-old.
"Nadal is number one, he won two Grand Slams this year, he play really well. It will be very tough for me."