She begins her Australian Open campaign against American Madison Brengle.
Aiava's appointment with Halep was among several leaked on social media before they were confirmed during the official draw broadcast.
Australia's charge will be led by Nick Kyrgios and Ashleigh Barty in the men's and women's tournaments respectively. He is likely to face fifth seed Dominic Thiem as early as in the fourth round.
Ajla Tomljanovic meets French Open and 29th seed Lucie Safarova, while Sam Stosur has a tough start against 2016 Rio gold medallist Monica Puig.
Bouchard wasn't aware of Aiava's woes with it being their first meeting.
"If I got to play the way I did yesterday against the number five in the world". So, when Novak Djokovic too joined the bandwagon, he felt like the Australian tennis player himself.
Players will also be able to claim 50 percent of their prize money if they pull out before their first match, an incentive created to allow a replacement to play instead.With tens of thousands of dollars at stake just for playing in round one, early injury pull-outs have often caused suspicion at Grand Slams, particularly at last year's Wimbledon.
But he insists it is premature to contemplate a repeat clash with the Spaniard. The live draw for both women's and men's singles brackets was held on Thursday evening (local time, which translates to Thursday morning in the United States).
ESPN analyst and former world No. 1 Chris Evert said Federer's experience and smooth style of play, which has left him relatively injury-free, set him apart from the field.
Djokovic says Federer is deserved favourite. "When you combine all of those ingredients with the massive talent that is Roger Federer, you get 19 majors and a career that is just incredible".
An unlikely victor at Melbourne Park in 2017 before going on to capture Wimbledon, the evergreen 36-year-old - who enjoyed a renaissance last season having been struck down by injuries in 2016 - is trusting his tried and tested preparation, having featured at the Hopman Cup in Perth just like he did last year.
"But I've arrived in plenty of time".
In the absence of the defending champion, Serena Williams, who feels unready to return yet after the birth of her first child, Olympia, Victoria Azarenka might have fancied her chances in a diminished field, but has had to pull out because of the custody battle for her young son, Leo.
She hasn't regained fitness yet though and won't be able to play.