'If he's on, you never know' - Djokovic feared Verdasco upset

The 23-year-old became the first Australian to win on day two with a 6-4 4-6 6-2 6-3 triumph.

Raonic will face Gilles Muller next, a hot player on tour who won his first ATP title last week.

A year on from ousting compatriot Rafael Nadal in a thrilling five-set upset, Verdasco - who had five match points before losing to Djokovic in the semi-final in Doha this month - made a horror start in his attempt to claim an even bigger first-round scalp. Advantage to the Canadian.World No. 2 David Wagner, who already has three Australian Open quad singles titles to his name, will be the only US player in the wheelchair field in Melbourne. The Switzerland native has struggled with injuries, towards the end of 2016 which has seen her fall down the rankings.

"I'm very pleased, considering I had one of the toughest first-round draws and definitely considering his form".

Six times Australian Champion and also the defending champion Novak Djokovic registered a straight set victory by defeating Fernando Verdasco 6-1, 7-6, 6-2.

Johanna Konta, who made a spirited run to the semifinals at last year's Australian Open, will attempt to advance to the third round when she kicks off Day 4 action at Rod Laver Arena on Thursday.

Women: 5-Karolina Pliskova (Cze) bt Sara Sorribes (Esp) 6-2, 6-0; 14-Elena Vesnina (Rus) bt Ana Bogdan (Rom) 7-5, 6-2; Heather Watson (GBr) bt 18-Samantha Stosur (Aus) 6-3, 3-6, 6-0; 28-Alize Cornet (Fra) bt Myrtille Georges (Fra) 6-3, 4-6, 6-1; 6-Dominika Cibulkova (Svk) bt Denisa Allertova (Cze) 7-5, 6-2.

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But this time the fans can expect an entirely different kind of an encounter as the scenario has changed a lot. These are no longer players just waiting for something to happen (and not minding much if nothing does).

There were some seeded casualties in the first part of the Australian Open second round, but nothing huge. Williams seemed likely to win the match in straight sets but an inspired Safarova fought back.

The world No.2 has won the Australian Open six times.

The former world number one has another tough test to pass, and she will be desperate to win another Grand Slam singles title in Melbourne.

After blowing a bagel opportunity in a one-sided first set, the 29-year-old allowed errors to creep into his game and saw his fabled defence exposed by some unremitting hitting from the other side of the net. His serve was not so good, but his aggressiveness and movement were excellent. "She's a really good player".

The players will be on court at 08.00 GMT on Thursday January 19.

Last year's beaten women's finalist Serena Williams eased into the second round as the six-time victor beat Belinda Bencic.

Wednesday in Melbourne look for highlights (17) Roger Federer vs. Noah Rubin, (1) Andy Murray vs. Andrey Rublev, (4) Stan Wawrinka vs. Steve Johnson, (31) Sam Querrey vs. Aussie teen Alex De Minaur, and (10) Tomas Berdych vs. Ryan Harrison.