Former top-ranked doubles player Gisela Dulko of Argentina has retired from tennis, finishing her career with four singles titles and 17 in doubles.

Serena Williams' French Open is over after a first-round loss in mixed doubles to go with her quick exit in singles.

Second seed Maria Sharapova routed Gisela Dulko of Argentina 6-2, 6-0 in the second round of the WTA/ATP Indian Wells tournament on Saturday.

Former champion Maria Sharapova demolished Argentina's Gisela Dulko 6-0, 6-1 in less than an hour in the first round of the Australian Open on Tuesday.

Argentina's Gisela Dulko produced one of the finest performances of her career on Friday to reach the fourth round of the French Open with a 6-4, 1-6, 6-3 win over last year's runner-up Samantha Stosur of Australia.

Spaniard David Ferrer justified his top seeding here on Saturday as he retained his ATP title in a thrilling three set win over compatriot Nicolas Almagro 7-6 (7/4), 6-7 (2/7), 6-2.