Petrova began the year by teaming with
Dmitry Tursunov to represent Russia as the top seeds in the
Hopman Cup, an exhibition in
Perth, Australia that ran from
December 30, 2006, through
January 5, 2007. Russia won the cup, defeating Spain in the final three matches to none.
After her success there, it was time for Petrova to start her WTA Tour season. She played her first tournament of the year at Sydney, but was forced to pull out in her first match, down 6-2, 4-2 to
Ana Ivanović. This left her with little preparation for the
Australian Open, where she dropped just eight games to reach the third round before falling victim to
Serena Williams, the eventual champion, after holding a 5-3 second set lead.
At the
Open Gaz de France in Paris, Petrova picked up her seventh tour title and first of the season by beating
Lucie Safarova 4-6, 6-1, 6-4. In the earlier rounds she had beaten
Martina Müller 6-1, 6-2,
Dinara Safina 6-3, 6-2 and
Amélie Mauresmo 5-7, 6-4, 7-6
7. The victory over Mauresmo was her third victory over the Frenchwoman in their previous four meetings. She followed it with a quarterfinal at the
Proximus Diamond Games, losing in straight sets to
Anna Chakvetadze.
Her next tournament was the
Pacific Life Open in
Indian Wells, where after a first round bye she beat
Gisela Dulko 6-3, 6-4 and survived a third round scare against dangerous American
Laura Granville, eventually prevailing 4-6, 6-3, 6-0. However, she was forced to retire in her fourth round match against
Tatiana Golovin, trailing 6-2, 1-0.
Petrova reached the quarterfinals at the
Sony Ericsson Open in
Key Biscayne, Florida, losing to
Justine Henin. Petrova then reached the final at
Amelia Island, but failed to defend her title, losing to
Tatiana Golovin 6-2, 6-1.
She played the
Fed Cup for
Russia, beating
Anabel Medina Garrigues in her only singles match 6-3, 6-4 in Russia's 5-0 win over
Spain. She was scheduled to play another match but pulled out.
Petrova began her red clay court season at the
J&S Cup in
Warsaw, Poland as the fifth-seeded player. In the second round, she was upset by Italian player
Mara Santangelo 6-3, 6-3.
At the
Qatar Telecom German Open in
Berlin, Petrova was defending a title for only the third time in her career, but she once again failed to rise to the occasion losing to
Svetlana Kuznetsova 7-6, 6-4. Before this meeting she had beaten
Séverine Brémond 6-4, 6-2 and
Elena Dementieva 6-3, 6-3. She then played in the
Internazionali BNL d'Italia in
Rome as the fifth seed, where she retired in her third round match with
Elena Dementieva while trailing 4-3.
She was the eleventh-seeded player at the
French Open and was the first big upset of the tournament when she lost to
Květa Peschke 7-5, 5-7, 6-0. After the loss, she claimed that the low back pain which had forced her to retire from her match in Rome was still bothering her. It was her second consecutive first round loss at the French Open because of injury.
Petrova kicked off her grasscourt season at the Tier II event held at
Eastbourne. She was the third seeded player at the event, and lived up to her seeding by advancing to the semifinals. After a first round bye, she beat
Nathalie Dechy 7-5, 7-5 and
Sybille Bammer 6-7
6, 7-5, 6-4. However, she retired in her semifinal match against second-seeded
Amelie Mauresmo after losing the first set 6-4. Her success at this tournament consolidated her return to the top ten.
In the third Grand Slam of the year at
Wimbledon, Petrova faced little resistance in her first two matches, beating
Vania King 6-0, 6-1 and
Sania Mirza 6-2, 6-2. In the third round, she beat Spaniard
Virginia Ruano Pascual 6-3, 7-6 to set up a fourth round clash with
Ana Ivanović, which she eventually lost 6-1, 2-6, 6-4. However, it was the first time Petrova had reached the fourth round of a Grand Slam since the
2006 Australian Open.
In the
2007 Fed Cup tie against the
USA on July 14/15, Petrova played a pivotal role in securing the victory for her team. While losing on the first day against
Venus Williams, she won her singles match against
Meilen Tu on the second day and then teamed up with
Elena Vesnina to beat Williams and
Lisa Raymond in the decisive doubles rubber.
Petrova began her summer hardcourt season at the
Acura Classic held in
San Diego, United States. She beat compatriot
Elena Bovina in the second round and
Katarina Srebotnik in the third round before falling to
Patty Schnyder 6-4, 6-4. In the Srebotnik match, Petrova had several match points in the early stages of the tiebreak but lost them all before eventually winning it 12-10.
At the
JPMorgan Chase Open, Petrova reached her third final of the year by defeating
Virginie Razzano in the quarterfinals and then receiving a walkover into the final when
Maria Sharapova withdrew from their match. In the final, she lost to
Ana Ivanović 7-5, 6-4, dropping her to 1-2 in tour finals in 2007 and 7-8 in her career. She continued her good form in Toronto, losing to
Justine Henin in the quarterfinals.
In the final Grand Slam of the year at the
U.S. Open, Petrova was the No. 7 seed. She easily went through to the third round, beating
Timea Bacsinszky and
Anastassia Rodionova in straight sets, before coming up against the in-form
Ágnes Szávay who beat her 6-4, 6-4. The loss meant that she has not gone past the fourth round of any major tournament all season, the first time since 2002.
She begun her indoor season at the
Fortis Championships held in
Luxembourg as the fourth seed, and thus receiving a first round bye. However, she was sent home surprisingly early by Belarussian teenager
Victoria Azarenka 6-2, 6-1. Her next tournament was the
Porsche Tennis Grand Prix held in
Stuttgart, where she was the defending champion. She reached the quarterfinals, but retired against
Jelena Janković being down 5-1 in the second set, having won the first.
Although she was scheduled to play Linz, she pulled out because of a left hip injury, putting an end to her disappointing season. She finished the year ranked fourteenth in the world, her lowest year-end ranking in five years.