Croatia, which won the Davis Cup in 2005, will face James Blake, Andy Roddick and the Bryan brothers in the July 10-12 quarterfinal on an indoor clay court in Porec, Croatia.
Karlovic advanced to the quarterfinals of Wimbledon on Monday by beating Fernando Verdasco. He faces five-time Wimbledon champion Roger Federer on Wednesday.
Croatia has beaten the U.S. on both occasions the countries have played each other in the Davis Cup.
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Week 3 marked by hats, cards, surprises
