Topic: Argentine Juan Martin

Ivo Karlovic ended the career of American James Blake Wednesday with a five-set, late-night victory at the U.S. Open.

Louisville, Kansas lead NCAA Tourney picks ... Nadal bests del Potro at Indian Wells ... Lewis rallies for win, claims world No. 1 ... Raikkonen wins first Formula 1 race of '13 ... Sports news from United Press International.

Fifth-seeded Rafael Nadal of Spain won the BNP Paribas Open Sunday by defeating seventh-seeded Argentine Juan Martin del Potro in three sets.

Top-seeded Novak Djokovic and No. 3 Andy Murray each needed three sets to record second-round victories Sunday at the BNP Paribas Open.

Top-ranked Novak Djokovic and No. 2 Roger Federer reached the title match of the season-ending ATP World Tour Finals Sunday, posting semifinal victories.

Defending champion Roger Federer got off to a good start at the Western & Southern Open Tuesday, downing Argentine Juan Martin del Potro in the second round.

Argentine Juan Martin del Potro reached his third major quarterfinal this year Tuesday at the U.S. Open, but Scotsman Andy Murray was upset.

Defending champion Novak Djokovic of Serbia was a third-round winner Tuesday at the $4.5 million BNP Paribas Open.

Second-seeded Argentine Juan Martin del Potro moved Tuesday into the second round at the $1.23 million Regions Morgan Keegan Championships.

The ATP Tour wraps up its 2008 season with the eight-player Tennis Masters Cup beginning Sunday at Shanghai's Qi Zhong Stadium.