Zverev, 20, has been touted as the "next big thing" for some years and is coming off five titles last season, yet he has never made it past the fourth round of a Grand Slam. "I don't like usually going to draws because they freak me out".
Whilst Federer faces Slovenian Aljaz Bedene next week, top seed Nadal, the losing finalist previous year, is up against Dominican Victor Estrella Burgos.
"Rafa and Roger are the best ones, but I'm playing well and I'm in good shape".
Wilander also said that even though they are older and more creaky, Federer and Nadal still possess an aura that means they win matches before leaving the locker room.
If there is to be a victor outside the top guns in Melbourne, those who look most likely are Bulgarian Dimitrov, third in the rankings behind Nadal and Federer, Germany's Zverev and tempestuous Australian Nick Kyrgios. Federer could face seventh-seeded David Goffin or 12th-seeded Juan Martin del Potro in the quarter-finals.
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.
His 2017 comeback could be inspiration for the likes of Djokovic, who has won the Australian title a record six times but has been sidelined since Wimbledon with a right elbow injury.
Doubt was cast over whether Djokovic would be fit to play in the Australian Open, which starts on Monday, when he withdrew from warm-up events in Abu Dhabi and Doha.
It was the first year since 2009 that Djokovic didn't reach at least one Grand Slam final. He had an exceptional 2017, winning seven titles, including two Slams - the Australian Open and Wimbledon. "If I am not feeling good, probably I wouldn't be here so that's good news", the 16-time grand slam champion told Channel 7.
"It's their view and I've never needed the help of Tennis Australia to achieve what I've achieved in my career".
Organizers defended the decision to invite Sharapova to appear as the representative for the women's draw, with tournament director Craig Tiley saying the sanction was over and the 30-year-old Russian was there as a former champion. The Swiss star has won the tournament five times.
"The drive, I still have it. For me it was not ideal to not be in Brisbane, I would have loved to be there but I had to make a different schedule this year", Nadal said during the week.