Ivo Karlovic needs 3 hours, 16 minutes plus three tiebreaks to beat John Isner at U.S. Men's Clay Court Championship

Sixth-seeded Kei Nishikori of Japan upset top-seeded Mardy Fish of the United States for a 6-3, 6-2 victory in the quarterfinals of the U.S. Men's Clay Court Championship.

Source: http://sports.espn.go.com/sports/tennis/news/story?id=6311745&campaign=rss&source=TENNISHeadlines

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