Kudryavtsev knocks out 8th-seeded Agut at Chennai
Kudryavtsev earned a hard-fought 6-4, 3-6, 6-3 win over Agut, who had a memorable run here last year when he knocked out top-seeded Tomas Berdych in the quarterfinals and stretched eventual winner Janko Tipsarevic to three sets in the final.
In a surprise result that had the home crowd cheering, Indian wild-card entry Yuki Bhambri beat up-and-coming Spanish player Carreno Busta 6-4, 6-3.
Bhambri went for the lines against an opponent who failed to live up to expectations after rising from 715 to a career-best ranking of 64th last season, earning him the ATP's most improved player of the year award.
Copyright 2013 by The Associated Press
This story is from ESPN.com's automated news wire. Wire index
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