Wawrinka, who defeated Rafael Nadal to win the 2014 Australian title, has slipped to nine in the world rankings, having not played since his first-round Wimbledon loss to Russian Daniil Medvedev in July.
Federer displayed that freedom previous year and Wilander believes that fellow Swiss Wawrinka, who ended last season in August with a knee complaint, could arrive with a similar attitude this time around at Melbourne Park.
Grigor Dimitrov, a semifinalist here past year, is seeded third and six-time champion Novak Djokovic - coming back from a six-month injury layoff - is 14th.
Federer's big concern would be against del Potro in the quarters.
Dominic Thiem of Austria is rounding off the top five seeds. Former champions Serena Williams and Victoria Azarenka will miss the Melbourne Major but Petra Kvitova is back after she was forced to skip it a year ago following career-threatening hand injuries in a home invasion.
Australia's charge will be led by Nick Kyrgios and Ashleigh Barty in the men's and women's tournaments respectively.
No sooner has he returned to the bosom of Slovenia after failing to qualify for Great Britain in the Davis Cup than he draws Roger Federer in the first round of the Australian Open, which starts here on Monday.
Despite many pundits, including John McEnroe, writing off Federer'sGrand Slam chances, Annacone also believes his intelligence has been a crucial factor in his return to the top, with the Swiss tweaking his game to stay amongst the top stars.
The Aussie often wears the sleeve in a bid to keep his serving arm warm, protecting his biggest asset. "It's not always the best when you are an athlete so I'm looking forward to it, enjoying the crowd".
The two greats returned to the top of the sport previous year, gobbling up all four Grand Slams between them and finishing top of the ATP rankings.
Their replacement - a "lucky loser" from the qualifying tournament - will get the other 50 percent of the first-round prize money.
Hon was the only one of eight Australians this week to reach the second round of qualifying.
Any repeat this year and he would lose the lot.
Simply by turning up, they were eligible for prize money and avoided a fine.
To choose a potential "dark horse" for the title is slightly easier as both draws are wide open.
They will also be restricted to five minutes' warm-up time on court, and another one minute before the first point. He followed his run to the final in Melbourne by winning the French Open and U.S. Open, splitting the Grand Slam honors with Federer for the year.
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