Katie O'Brien's campaign ended by Jelena Jankovic

Eighth seed Jelena Jankovic has ended Katie O'Brien's Australian Open campaign in straight sets.

The Hull-born 23 year-old won through to the second round of a major for just the second time in her career when she defeated Patricia Mayr earlier in the week, but could not go a step further as she lost 6-2, 6-2.

Fellow Briton Elena Baltacha earlier claimed the scalp of a seed when she defeated Kateryna Bondarenko (30) in straight sets. However, the 87th-ranked O'Brien could not replicate that effort with her 42 unforced errors proving costly.

Jankovic broke O'Brien's opening service game as she surged 3-0 ahead in the first set.

The games then went with serve until 5-2 when after seven deuces O'Brien was broken again to concede the set.

O'Brien had fended off four set points in the protracted game before Jankovic pounced on a short ball to fire a backhand cross-court winner.

In the fourth game of the second set a double fault from O'Brien handed Jankovic a break to love, and the Serb did not relinquish the advantage to win in one hour and 14 minutes.

Elsewhere in the women's draw, Russian third seed Svetlana Kuznetsova is flying under the radar and looked impressive in her 6-2, 6-2 defeat of countrywoman Anastasia Pavlyuchenkova.

The French Open champion, whose best effort here has been making the quarter-finals, said she had prepared well in the off-season and was ready to make an impact.

"I think I've done a good pre-season, I've worked hard and I've enjoyed it," she said.

"I'm feeling good. I worked on new things."

Danish fourth seed Wozniacki downed Canada's Aleksandra Wozniak 6-4, 6-2 to get her campaign off to a winning start while Belarussian seventh seed Azarenka blasted her way past France's Stephanie Cohen-Aloro 6-2, 6-0.