Russia''s Zvonareva through to Australian Open quarter-finals

MELBOURNE: Seventh seed Vera Zvonareva advanced to the Australian Open quarter-finals Sunday after winning an all-Russian clash with tenth seed Nadia Petrova 7-5, 6-4.

Zvonareva maintained her good form at the season-opening Grand Slam to down
Petrova in 100 minutes and set up a meeting with French 16th seed Marion Bartoli in the quarters.

The 24-year-old always looked comfortable against Petrova, despite winning only one of their six previous meetings.

Zvonareva''s new-found self-belief stems from a strong season in 2008 when she won bronze at the Beijing Olympics, reached the biggest final of her career at the season-ending WTA Championships and broke into the top 10.

But she was assisted by a mistake-ridden performance from Petrova, who committed 49 unforced errors in the match.

Monte Carlo-based Petrova''s serve also failed to fire and she committed three double faults in each set, allowing Zvonareva to break her twice in the first and once in the second.

Zvonareva took the first set in 57 minutes and went ahead with an early break in the second and never surrendered the advantage.

Petrova saved one match point and appeared to have survived another when a
Zvonareva return went long.

But her opponent challenged the decision and the point had to be replayed when Hawkeye technology showed the ball had brushed the baseline.

Zvonareva left no room for doubt when she again served for the match, rushing to the net to meet a Petrova backhand and smashing it beyond her opponent''s reach in the corner of the curt.