CHENNAI, India (AP) — Top-seeded Stanislas Wawrinka of Switzerland advanced comfortably but second-seeded Mikhail Youzhny of Russia quit during his second-round match due to a stomach infection in the Chennai Open on Wednesday.
Wawrinka defeated Benjamin Becker of Germany 6-3, 6-1, while Youzhny retired ill against Duei Sela of Israel while trailing 3-1 after 24 minutes.
Youzhny’s compatriot, Alexander Kudryavtsev, also retired while leading 6-1, 0-3 against Aljaz Bedene of Slovenia.
Kudryavtsev, who knocked out eighth-seeded Roberto Bautista Agut of Spain in the first round, suffered a leg injury.
Seventh-seeded Frenchman Edouard Roger-Vasselin also defeated Jiri Vesely of the Czech Republic 6-4, 6-4.
