keywords: federer agassi andre sargis showdown
text: Agassi Sets Up Federer Showdown at U.S. Open  NEW YORK (Reuters) - Sixth seed Andre Agassi set up a  mouthwatering quarter-final showdown with world number one  Roger Federer following a 6-3, 6-2, 6-2 win over Armenia's  Sargis Sargsian at the U.S. Open Monday.