Radek Stepanek's five-set win over Ivo Karlovic helped the Czech Republic build a 2-0 lead over Croatia at a Davis Cup semifinal at Porec, Croatia. The scores of the near 6-hour match, 6-7 (5-7), 7-6 (7-5), 7-6 (8-6), 6-7 (2-7), 16-14, put the Czechs within one victory of advancing to the Davis Cup finals. The fourth-longest match in Davis Cup history featured a record 78 aces by the 6-foot-10 Karlovic, a 30-game marathon fifth set and just one service break. Also, the 82 games played equaled the record for the most number of games played in a single match since the tie-break was introduced to Davis Cup competition in 1989. The crowd was amazing, Stepanek said.

Sixth-seeded Juan Martin del Potro beat No. 16 Marin Cilic of Croatia in four sets Thursday in a men's quarterfinal at the U.S.

Argentine Juan Martin del Potro reached his third major quarterfinal this year Tuesday at the U.S.

Marin Cilic beat James Blake in four sets Sunday, sending Croatia to the Davis Cup semifinals and eliminating the United States team. Cilic's 6-3, 6-3, 4-6, 6-2 win gave Croatia an insurmountable 3-1 lead in the best-of-five quarterfinal competition. After Cilic's clinching win, the U.S.

Bob and Mike Bryan won their doubles match Saturday, bringing the United States within 2-1 in its Davis Cup quarterfinal against Croatia. The twin brothers from Camarillo, Calif., long the No.