The self-described 'corporate mullet' Dylan Alcott is proudly rocking has been playfully mocked on live TV.

In commentary for Channel 9 during the Australian Open, the former champion wheelchair tennis player was labelled the 'fifth Beatle' on Wednesday.

Alcott, 32, had no issues with his new nickname, which followed some graphics on screen featuring the likes of Paul McCartney and John Lennon.

When quizzed on his snazzy haircut, Alcott told fellow presenters Tony Jones, doubles great Todd Woodbridge and ex-Aussie star Jelena Dokic he was keeping his options open career wise 'after winning Australian of the Year' in 2022.

The always cheeky Alcott then fired a shot at Jones, declaring he was gunning for the veteran's sports journalist role with the free to air network.

It comes as Alcott - who retired from the sport last year following a glittering career - revealed why he is a fan of rain delays at the Australian Open.

'For fans watching (and on the coverage) the rain delays are annoying,' Alcott told viewers on Wednesday morning.

'But I love it... (the fact) that people go to bed overnight with matches undecided.. then they (players) get to fight another day.'

Alcott dates Chantelle Otten, a Melbourne based psycho-sexologist passionate about empowering people to feel great about their sexual health, self-esteem, communication and education.

The 15-time Grand Slam winner's take on rain delays follows Aussies Thanasi Kokkinakis and Max Purcell both having their matches on Tuesday suspended.

Kokkinakis leads Fabio Fognini by two sets to love, with the Italian accused in some quarters of tanking.

Purcell won his first set, and is locked at 6-6 in the fourth versus Finland's Emil Ruusuvuori.

Melbourne's unpredictable weather caused the suspension on back courts, with temperatures of almost 40 degrees courtside soon replaced by rain. 

The conditions have resulted in a backlog of round one matches yet to completed - frustrating players, fans and tournament organisers.