Top-ranked Nadal will open against Victor Estrella Burgos, has a potential fourth-round match against John Isner, and No. 3 Grigor Dimitrov in his half of the draw.
Nadal was naturally rusty after his extended break but looked free from his notorious knee problems and is not alone heading to the Australian Open after injury troubles.
He could not give a definitive answer to whether he will absolutely play in the year's first grand slam next week, but said all signs are currently positive.
Moya can take some credit for the vast improvement in Nadal's second serve, which helped the Spaniard win a 10th French Open title without dropping a set and saw him blow away Kevin Anderson to lift the final major of the year in New York.
His best result at a Grand Slam so far has been reaching the last four at Wimbledon in 2014 and repeating the feat in Australia last year, when he went down to Nadal in an intense five-setter.
'So as long as they're here they will be competing at the highest level and fighting for Grand Slam titles, it will be hard to beat them.
But, after beating Thiem 6-1 6-4 at the Kooyong Classic, Djokovic declared himself happy.
Elsewhere, all eyes will be on Maria Sharapova as she returns for only her second grand slam tournament since serving a drugs ban.
Bouchard, who has fallen on tough times in recent years and comes into Melbourne ranked 81st, faces France's Oceane Dodin in the first round.
"I personally didn't know what's going to happen".
Federer won the 2017 Australian Open.
"Everybody thinks I probably have a good chance to maybe repeat and other guys are maybe a bit hurt", Federer said recently before being drawn against Aljaz Bedene in the opening round. "I expect to continue to do so".
Boris Becker has backed Roger Federer to match Novak Djokovic's record haul of Australian Open titles by defening his crown at Melbourne Park this month. When both departed before the quarter-finals, it cleared the way for Roger Federer and Rafael Nadal to reach the final. The world number four starts tournament against Thomas Fabbiano of Italy.
Tennis, a game played on intersecting lines, is at a crossroads and not just in terms of how it responds to its latest surge in injuries.
Muguruza's preparations have been similarly thrown into disarray after she was forced to withdraw from the Sydney International with a leg injury.
"For the first time I have to play here at the Australian [Open] for the first tournament of the year".
"He lets the losses roll off his back, there's no tension there".
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