Wimbledon, England -- (Sports Network) - Top-ranked Dinara Safina reached the quarterfinals, while Venus Williams continued her quest for a third straight Wimbledon title with a fourth-round victory over fellow former world No. 1 Ana Ivanovic and Serena Williams was also a winner Monday at the All England Club.

The French Open and Australian Open runner-up Safina fought back to beat 2006 Wimbledon champ Amelie Mauresmo 4-6, 6-3, 6-4, as history was made Monday when the two women played the first-ever official match under the new retractable roof on the famed Centre Court here.

The 17th-seeded Mauresmo was leading Safina 6-4, 1-4 when played was delayed by rain for the first time at this 2009 fortnight.

After the roof was closed in the second set amid cheers from the British faithful, Safina returned shortly thereafter to finish off a comeback victory against the former No. 1 Mauresmo.

Safina won eight-of-14 games under the roof to reach her first-ever Wimbledon quarterfinal.

The 23-year-old Safina liked the environment under the roof.

"It was great," Safina said. "Very nice. You can't compare it with anything. It's a really nice atmosphere, especially with the crowd, because it's getting like louder so it's even nicer to play. I mean, I won, so everything was perfect."

There was not a single rain stoppage here in Week 1.

Safina's quarterfinal opponent on Tuesday will be big-serving German Sabine Lisicki.

Venus, the third seed and a five-time Wimbledon champ, moved into the quarterfinals when a tearful Ivanovic retired in the second set with a thigh injury. The seven-time Grand Slam champion won the first five games of the match and was ahead 6-1, 0-1 when the Serbian star called it quits.

Ivanovic said she hurt her thigh while striking an ace to erase a break point in the opening game of the second set.

"I didn't feel anything up until that point," she said. "When I landed, I just felt a sharp pain on my inner thigh, and I couldn't step on my leg ever since."

The popular Serb took a 10-minute medical timeout to have her thigh wrapped by a trainer. She returned for two more points, but after notching a service winner to take the first game of the second stanza, she began crying and walked over to let the chair umpire know that she was unable to continue.

"This is Wimbledon. It's the last place you want to have an injury that you can't overcome," Venus said. "So I'm wishing her a lot of luck in her recovery."

Ivanovic was the top seed here a year ago, bowing out in the third round.

Venus is 27-1 in her last 28 matches at the All England Club.

The former top-ranked Serena, seeded second here, needed a mere 56 minutes in a 6-3, 6-1 rout of Slovakia's Daniela Hantuchova. Serena has reached at least the quarterfinals in nine of the last 10 majors.

The Williams sisters have combined for seven of the last nine Wimbledon crowns, with Venus capturing five and Serena two. The two met last year in the championship match, a 7-5, 6-4 victory for Venus. Both of Serena's titles on the famed grass courts of the London suburb came in finals against her sister in 2002 and 2003.

Venus will next take on 11th-seeded Agnieszka Radwanska of Poland. Radwanska eliminated upstart 17-year-old American qualifier Melanie Oudin with a 6-4, 7-5 win. Oudin previously stunned sixth-seeded Serbian Jelena Jankovic in the third round.

The reigning Australian Open and U.S. Open titlist Serena's quarterfinal opponent will be eighth-seeded Belarusian Victoria Azarenka, who advanced with a 7-6 (7-5), 2-6, 6-3 win over 10th-seeded Russian Nadia Petrova. Azarenka and Serena have split two matches this year, with the American taking a fourth- round tilt on the way to her Aussie Open title and the Belarusian winning the Miami crown in April with a stunning 6-3, 6-1 triumph in the final.

The women's draw lost a fifth top-10 seed on Monday when the 19-year-old Lisicki cooled off No. 9 Dane Caroline Wozniacki 6-4, 6-4. Wozniacki had been 8-0 on grass this season, including a title at Eastbourne two weeks ago.

The rising 18-year-old Wozniacki has appeared in five finals this year, going 2-3.

Fourth-seeded Elena Dementieva breezed to a 6-1, 6-3 victory over fellow Russian Elena Vesnina on Day 7, while another fourth-round result saw Italian veteran Francesca Schiavone take out 26th-seeded Frenchwoman Virginie Razzano 6-2, 7-6 (7-1). The Olympic gold medalist and two-time major runner-up Dementieva will tangle with Schiavone in the quarters on Tuesday.