World number one Roger Federer recovered from a set down to beat unseeded German Denis Gremelmayr 2-6, 7-5, 6-1 on Saturday to reach his first final of the year at the Estoril Open. He will now face the number two seed Nikolay Davydenko of Russia who beat France's Florent Serra 6-2, 6-2 in the other semifinal. In the women's final, second-seeded Russian Maria Kirilenko will be seeking her third title when she faces 2004 finalist Iveta Benesova of Czech Republic. The unseeded Benesova beat Estonia's Maret Ani 6-2, 6-1 while Kirilenko beat sixth-seeded Czech Klara Zakopalova 2-6, 6-3, 7-5 in Saturday's semifinals. Ferrer in final Top-seeded David Ferrer rallied to beat Tommy Robredo 2-6, 6-2, 6-3 Saturday and advance to the final of the Valencia Open. Ferrer will play Spain's Nicolas Almagro in the final after Amagro beat Russia's unseeded Evgeny Korolev 6-1, 6-4.Blake in Houston last four American James Blake eased into the semifinals of the US Clay Court Championship on Friday after a comfortable 6-4, 6-3 win over Argentine Agustin Calleri. The top seeded world No.8 will face Oscar Hernandez of Spain in Saturday's semifinals. Hernandez made the last four after he upset third seed, and 2006 champion, Mardy Fish 6-2, 7-6. American Wayne Odesnik and Spain's Marcel Granollers-Pujol will meet in the other semifinal. Odesnik came from behind for a 2-6, 7-6, 6-1 win over Argentine Sergio Roitman. Seventh seed Granollers-Pujol defeated Brazilian Marcos Daniel 6-3 6-2, converting five of seven break points and only losing his serve once.Serena stops Sharapova In South Carolina, Serena Williams reached the Family Circle Cup semifinals on Friday by beating number two seed Maria Sharapova 7-5, 4-6, 6-1 while Vera Zvonareva upset top seed Jelena Jankovic 6-2, 3-6, 6-2. Sharapova, who won only nine of 35 points in a final set during which Serena made only one unforced error, lost to the American for the fifth time in seven career matches. Serena blasted 11 aces and successfully landed 65 percent of her first serves during the two-hour, 30-minute affair to set up a clash with France's unseeded Alize Cornet who upset 10th seed Agnes Szavay of Hungary. Zvonareva will face fellow Russian Elena Dementieva in the other semifinal after she beat Patty Schnyder 6-4, 6