American 20th seed Andy Roddick delayed his retirement by advancing to the fourth round of the US tennis Open with a 4-set victory over Italy's Fabio Fognini.
Roddick, the 2003 US Open winner, who says this will be the final tournament of his career, will play for a spot in the quarter-finals against 2009 winner Juan Martin Del Potro, the seventh seed from Argentina.
Defending champion Novak Djokovic reached the last 16 with a straight sets win over Frenchman Julien Benneteau, while fourth seed David Ferrer ended Lleyton Hewitt's latest attempt to roll back the years with a 4-sets win.
Del Potro defeated 63rd-ranked compatriot Leonardo Mayer in 3 sets in a three-hour 20-minute marathon which was wrapped up on his sixth match point.
Elsewhere, Serb eighth seed Janko Tipsarevic, a quarter-finalist in 2011, takes on Slovenian qualifier Grega Zemlja with the winner to face either US ninth seed John Isner or German 19th seed Philipp Kohlschreiber.
