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 US Men's Clay Court Championship on Friday night. Nishikori did not face a break point in the match and leaped from a 2-2 tie in the first set. Fish, the top ranked American at No. 11 in the world, won only one more game the rest of the set. “I don't think he played great today, he was missing a lot,” Nishikori said. Nishikori will face Pablo Cuevas of Uruguay in Saturday's semifinals. Cuevas beat third-seeded Guillermo Garcia-Lopez 1-6, 7-6 (4), 6-3 earlier Friday. Qualifier Ivo Karlovic of Croatia boomed 24 aces and ended a 3-hour, 16-minute match with a close line call for a 7-6 (2), 6-7 (2), 7-6 (9) victory over fourth-seeded John Isner. Ryan Sweeting of the United States, gained his first career semifinal with a 3-6, 6-3, 6-1 victory over Teymuraz Gabashivili of Russia. Wozniacki rallies to win Top-ranked Caroline Wozniacki rallied from 4-2 down in the third set to defeat Yanina Wickmayer, 4-6, 6-4, 6-4 and reach the Family Circle Cup semifinals at Charleston Friday. Wozniacki will face another difficult semifinal Saturday against Jelena Jankovic, who ended the run of 18-year-old American Christina McHale 6-2, 6-0. The other semifinal will feature 11th-seeded Peng Shuai against Elena Vesnina, the only unseeded player among the final four. Peng defeated Sania Mirza 2-6, 6-2, 6-2 while Vesnina beat No. 12 seed Julia Goerges, also by 2-6, 6-2, 6-2. Begu to face Azarenka Irina-Camelia Begu of Romania rallied from a set down to beat second-seeded Svetlana Kuznetsova Saturday and set up her first tour final against top-seeded Victoria Azarenka at the Andalucian Tennis Experience. Begu was broken three times in the opening set but recovered to beat Kuznetsova 3-6, 7-6 (3), 6-4. The sixth-ranked Azarenka overpowered eighth-seeded Sara Errani of Italy 6-2, 6-1 in the other semifinal. Andujar in final Pablo Andujar upset top-seeded Albert Montanes 6-4, 6-4 Saturday to reach the Grand Prix Hassan II final in Casablanca and stay on course for his first career title. The Spaniard will play fifth-seeded Potito Starace of Italy in Sunday's final. Starace beat No. 8 Victor Hanescu of Romania 6-1, 6-7 (3), 7-6 (2) and is also looking for his first career title.