CHENNAI - World number eight Stanislas Wawrinka warmed up for the Australian Open later this month by bagging the ATP Chennai Open title with a fluent victory over Edouard Roger-Vasselin on Sunday. The top-seeded Swiss, playing his 500th ATP Tour match, outclassed the 52nd-ranked Frenchman 7-5, 6-2 in the 90-minute final at the Nungambakkam Tennis Stadium. It was the fifth career title and the second in Chennai for 28-year-old Wawrinka , who emerged from the shadows of his renowned Swiss compatriot Roger Federer with a top 10 finish last year. The morale-boosting win ahead of the year's first Grand Slam in Melbourne, starting January 13, earned Wawrinka the winner's purse of $72,490 and 250 ranking points. Seventh-seeded Roger-Vasselin received $38,180 and 150 points. AFP