Amelia Island, April 11:

Maria Sharapova rallied from 3-0 down in the final set to squeak past Anabel Medina Garrigues of Spain 7-6 (3), 5-7, 7-6 (1) and reach the Bausch & Lomb Championships quarter-finals.

In other third-round matches, three-time champion Lindsay Davenport beat Croatian Karolina Sprem 6-4, 3-6, 6-4, and 2001 winner Amelie Mauresmo led three Frenchwomen into the quarter-finals by beating seventh-seeded Agnieszka Radwanska for her 500th career win. Second-seeded Anna Chakvetadze lost to Dominika Cibulkova of Slovakia 6-2, 3-6, 6-1.

Top-seeded Sharapova took nearly 3 hours to subdue Medina Garrigues, who controlled the momentum early in the third set before Sharapova began the first of two bursts to escape. Down 3-0, Sharapova won the next five games and saved several of her opponents’ game points in the process to breathe easy at 5-3. Sharapova, seemingly in control, served for the match at 5-4. Medina Garrigues won the first two points and converted her sixth break of serve to even it at 5-all. The tiebreak went Sharapova’s way. The Russian won the first three and the last four points.

Mauresmo needed more than 2 hours to win 3-6, 7-5, 7-6 (6). Compatriots Virginie Razzano and Alize Cornet won in straight sets and will meet for a third time. Razzano put away Olga Govortsova of Belarus 6-2, 6-4, and Cornet beat Elena Vesnina of Russia 6-1, 7-5. No 8 Agnes Szavay overcame No 12 Katarina Srebotnik 3-6, 6-2, 6-3. No 10 Alona Bondarenko of Ukraine edged No 6 Dinara Safina of Russia 7-6 (5), 0-6, 7-5 and plays Sharapova next. The other quarters feature Cibulkova vs Mauresmo, and Szavay vs Davenport.