MADRID, May 25 -- Competing in her first event since 1994, Martina Navratilova saw her run at the Madrid Open come to a halt after two matches Thursday.
Navratilova, 43, and South Africa's Mariaan de Swardt lost their quarterfinal doubles match to the Spanish duo of Gala Leon Garcia and Maria Antonia Sanchez-Lorenzo, 6-3, 7-6 (7-5).
Leon Garcia also excelled in singles as the eighth seed defeated countrywoman Angeles Montolio, 6-4, 6-3, to advance to Friday's semifinals.
Navratilova, the winningest player in women's tennis history, retired at the end of the 1994 season. But she decided to return to action in doubles for four tournaments, starting this week.
Next up for Navratilova and De Swardt will be next week's French Open. They plan to compete at Eastbourne, England on grass before playing Wimbledon.
Former French Open champion Iva Majoli of Croatia has picked up her game just in time for next week's second Grand Slam event of the season. Hampered by injuries last season, Majoli advanced to her first WTA Tour semifinal since Linz, Austria in 1998 when Italin qualifier Germana Di Natale retired in the second set with a right arm injury. Majoli was leading, 6-1, 1-0.
Ranked No. 253 in the world, Di Natale stunned top seed Mary Pierce of France on Wednesday.
Virginia Ruano-Pascual set up an all-Spanish semifinal with Leon Garcia by outdueling Nicole Pratt of Australia, 6-3, 1-6, 6-2. Fabiola Zuluaga of Colombia will be Majoli's opponent in the other semifinal after beating Asa Carlsson of Sweden, 6-2, 6-4.