Maria Sharapova [ Images ] saved eight set points before finally grinding out a 6-2, 7-6 third-round victory over Maria Elena Camerin at the Nasdaq-100 Open on Sunday.

By contrast, Amelie Mauresmo [ Images ] made straightforward progress, defeating fellow Frenchwoman Marion Bartoli [ Images ] for the third time with a 6-4, 6-0 win.

Top seed Mauresmo now plays 14th-seeded Ana Ivanovic [ Images ] of Serbia and Montenegro, who beat Ukrainian Alona Bondarenko 6-3, 5-7, 6-3.

Sharapova, debuting a new black corset-look top, advanced despite making 38 unforced errors against the Italian ranked 79th. She faced a battle in the second set, trailing 1-4 before salvaging victory in one hour, 44 minutes with a backhand winner.

She now faces fellow Russian Maria Kirilenko, who defeated Viktoriya Kutuzova of the Ukraine 6-1, 6-4.

"I fought for it, I did a good job of fighting at the end," Sharapova told reporters. "When the day's not great, when you feel like you're not playing your best tennis, I still know that I can fight it out.

"I didn't really feel great out there today. I started off well and things were going my way and all of a sudden I just made a lot of unforced errors, especially with the wind."

In the men's draw, third seed David Nalbandian [ Images ] of Argentina fought back to defeat Czech Tomas Berdych 6-7, 6-1 6-0 to reach the fourth round.

Russian Nikolay Davydenko [ Images ], seeded fifth, went through 2-6, 6-2, 7-5 against Cypriot Marcos Baghdatis [ Images ], the Australian Open [ Images ] runner-up finishing the contest with two double faults.

Nalbandian won his fourth match out of five since returning from a month out with an abdominal injury suffered during the Davis Cup in February.

The Argentine, who beat world number one Roger Federer [ Images ] in the final of the Masters Cup last November, improved his record this season to 10-2 after 20-year-old Berdych's game fell apart in the second and third sets.

Nalbandian, an Australian Open semi-finalist this year, broke his opponent's serve five times.

Croatian Mario Ancic advanced with a 7-6, 6-7, 6-2 triumph over Florent Serra of France [ Images ]. Czech Radek Stepanek, the 15th seed, defeated Nicolas Massu [ Images ] of Chile 6-7, 7-6, 7-5.

Women's results: Round three
6-Elena Dementieva (Russia [ Images ]) beat Michaella Krajicek (Netherlands) 6-0 6-1   
22-Tatiana Golovin (France) beat Elena Vesnina (Russia) 6-2 6-3                
12-Svetlana Kuznetsova (Russia) beat 24-Martina Hingis (Switzerland [ Images ]) 3-6 6-1 7-6 (9)
7-Patty Schnyder (Switzerland) beat 28-Katarina Srebotnik (Slovenia) 7-6(3) 6-3
4-Maria Sharapova (Russia) beat Maria Elena Camerin (Italy [ Images ]) 6-2 7-6(2)         
10-Anastasia Myskina (Russia) beat Victoria Azarenka [ Images ] (Belarus) 6-3 7-5         
5-Nadia Petrova (Russia) beat Jamea Jackson (U.S.) 4-6 6-0 6-0                 
1-Amelie Mauresmo (France) beat 30-Marion Bartoli (France) 6-4 6-0             
21-Ai Sugiyama (Japan [ Images ]) beat 15-Elena Likhovtseva (Russia) 3-6 7-5 6-0          
Anna Chakvetadze [ Images ] (Russia) beat Virginie Razzano (France) 6-4 6-0               
20-Maria Kirilenko (Russia) beat Viktoriya Kutuzova (Ukraine) 6-1 6-4          
Eleni Daniilidou (Greece) beat 13-Daniela Hantuchova (Slovakia) 6-3 4-6 6-2    
32-Sofia Arvidsson (Sweden) beat Meghann Shaughnessy (U.S.) 5-7 6-3 7-6(5)     
Jill Craybas (U.S.) beat 27-Klara Koukalova (Czech Republic) 6-1 6-2           
Jie Zheng (China) beat 16-Anna-Lena Groenefeld (Germany [ Images ]) 6-4 7-5               
14-Ana Ivanovic (Serbia and Montenegro) beat Alona Bondarenko (Ukraine) 6-3 5-7 6-3

Men's results: Round three

Christophe Rochus (Belgium) beat 20-Robby Ginepri (U.S.) 4-6 7-5 6-3           
Agustin Calleri (Argentina) beat Carlos Moya [ Images ] (Spain) 6-3 7-6(6)                
6-Ivan Ljubicic (Croatia [ Images ]) beat 30-Filippo Volandri (Italy) 6-2 6-3             
16-Nicolas Kiefer (Germany) beat 18-Fernando Gonzalez (Chile) 6-2 3-6 7-5      
15-Radek Stepanek (Czech Republic) beat Nicolas Massu (Chile) 6-7(6) 7-6(5) 7-5
5-Nikolay Davydenko (Russia) beat 25-Marcos Baghdatis (Cyprus) 2-6 6-2 7-5     
22-Mario Ancic (Croatia) beat Florent Serra (France) 7-6(4) 6-7(11) 6-2        
3-David Nalbandian (Argentina) beat 26-Tomas Berdych (Czech Republic) 6-7(3) 6-1 6-0