By Iain Rogers MADRID (Reuters) - World number one and defending champion Serena Williams continued her serene progress at the Madrid Open when she eased past Spanish wildcard Lourdes Dominguez Lino 6-2 7-5 in the second round on Tuesday. Chasing a fourth title of the year and the 50th of her career, Williams had too much power for the slightly-built Dominguez Lino, who nonetheless managed to unsettle her illustrious opponent with some clever drop shots and lobs.

Maria Kirilenko kept Russia's hopes alive in their FedCup semi-final with Slovakia on Sunday as she beat Dominika Cibulkova 7-5, 6-1. Kirilenko, who is ranked 13th in the world, made light work of an opponent she has now beaten in three of their four meetings as she triumphed in one hour 41 minutes. "After yesterday's failure I managed to find my tennis today and it was the key to success in the match," Kirilenko said. "I played clinically trying to follow the plan which we worked out together with my coaches and it paid off as I won today."

By Mark Lamport-Stokes INDIAN WELLS, California (Reuters) - Former champion Caroline Wozniacki battled through a marathon encounter to upset fourth-seeded German Angelique Kerber 2-6 6-4 7-5 on Friday and reach her third BNP Paribas Open final in four years. The eighth-seeded Dane, winner at Indian Wells in 2011 after being a losing finalist the previous year, held off a late fightback by Kerber to scrape through in a wildly fluctuating contest lasting two-and-a-half hours.

Second-seeded Russian Maria Sharapova reached the semi-finals of the Indian Wells ATP Masters and WTA tournament on Wednesday with a 7-6 (8/6), 6-2 victory over Sara Errani. In a rematch of last year's French Open final, Sharapova again emerged triumphant, setting up a meeting with Russian Maria Kirilenko for a place in Sunday's final. Kirilenko advanced with a 4-6, 6-4, 6-3 victory over fifth-seeded Czech Petra Kvitova. bb/sr