World number eight Andy Roddick produced a serving masterclass to begin his quest for a second US Open title with a comfortable 6-2 6-2 6-2 straight-sets victory over Fabrice Santoro at Arthur Ashe Stadium on Wednesday.

Top-seeded American Andy Roddick booked his place in the quarter-finals of the SAP Open with a 6-2 6-4 victory over in-form Japanese teenager Kei Nishikori.

Andy Roddick narrowly survived a first-round scare at the SAP Open to prevail 6-3 6-7 (7/3) 7-6 (7/5) against heavy-serving Australian Chris Guccione on Wednesday.