Roddick advances to meet Del Potro at US Open

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American 20th seed Andy Roddick delayed his retirement by advancing to the fourth round of the US Open on Sunday with a 7-5, 7-6 (7/1), 4-6, 6-4 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.