Top-seeded Tipsarevic advances in Colombia
In the afternoon session, Italy's Matteo Viola beat fourth-seeded Edouard Roger-Vasselin of France 6-3, 7-5 to set up a match against Vasek Pospisil of Canada. Pospisil topped Australia's James Duckworth 7-5, 3-6, 7-5.
Copyright 2013 by The Associated Press
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