Berdych, Cilic advance to Chennai quarterfinals
Berdych, who had a bye in the first round, dominated 2009 finalist Devvarman and didn't face a break point.
Berdych, who will play Agut in the next round, said his excellent results last season made him work harder in the offseason. In 2012, he won two titles, reached the U.S. Open semifinals and helped his country win the Davis Cup.
Copyright 2013 by The Associated Press
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