Melbourne Park, 18 January 2012 | AAP

Australia’s Casey Dellacqua has been swept away by world No.3 Victoria Azarenka, as the pony-tailed Belarusian confirmed her status as the Australian Open’s form player on Wednesday night.

Azarenka needed just 57 minutes to win their second-round match 6-1 6-0.

World No.126 Dellacqua, who needed a wildcard to gain entry to the Open, had some fond memories of Melbourne Park to draw on, having downed seeds Patty Schnyder and Amelie Mauresmo in a memorable run to the fourth round in 2008.

Despite having to work her way back from some major injury setbacks since, Dellacqua also had some handy lead-in form this summer and in her opening round straight-sets win over Serbia’s Bojana Jovanovski.

But that was nothing compared to that of 22-year-old Azarenka, who came into the tournament fresh from winning the Sydney International, then dropped just one game in blitzing Britain’s Heather Watson in her opening match in Melbourne.

Dellacqua also took just one game, the first of the match, and even then she had to stave off a break point.

The Australian left-hander battled hard and went for her shots.

But Azarenka’s relentless, accurate and powerful ball-striking pressured Dellacqua into frequent unforced errors.

If Azarenka’s form alone is not enough to mark her down to go deep into this year’s tournament, a look at her draw adds to that likelihood.

Her third-round opponent will be unseeded German Mona Barthel, and if she wins that, she will also face an unseeded opponent, with eighth-seeded Pole Agnieszka Radwanska potentially waiting in a quarterfinal.

Day 4 results

Men’s singles, second round

Bernard Tomic bt Sam Querrey (USA) 3-6 6-3 7-6 (7-3) 6-3

Women’s singles, second round

Olivia Rogowska lost to 5-Li Na (Chn) 6-2 6-2

Casey Dellacqua lost to 3-Victoria Azarenka (Blr) 6-1 6-0

Men’s doubles, first round

Matthew Ebden/Chris Guccione lost to 4-Mahesh Bhupathi (Ind)/Rohan Bopanna (Ind) 5-7 6-4 6-4

Lleyton Hewitt/Peter Luczak bt Matthias Bachinger (Ger)/Philipp Kohlschreiber (Ger) 7-5 6-3

Greg Jones/John-Patrick Smith lost to Leander Paes (Ind)/Radek Stepanek (Cze) 6-2 6-2

Women’s doubles, first round

Ashleigh Barty/Laura Robson (GBR) lost to Dominika Cibulkova (Svk)/Jill Craybas (USA) 3-6 6-2 6-3

Daniella Jeflea/Viktorija Rajicic lost to Klaudia Jans-Ignacik (Pol)/Urszula Radwanska (Pol) 6-4 7-5

Jelena Dokic/Kateryna Bondarenko (Ukr) lost to Andreja Klepac (Slo)/Alicja Rosolska (Pol)7-6 (8-6) 7-5

Tammi Patterson/Storm Sanders lost to 11-Sara Errani (Ita)/Roberta Vinci (Ita) 6-0 6-0

Anastasia Rodionova/Arina Rodionova bt Sally Peers/Isabella Holland 6-2 6-1