Koroibete paid a heartfelt tribute to Cheika after joining the modern-day greats of Australian rugby as the Wallabies' 2019 player of the year.

In just his third season in the 15-man code after defecting from the NRL, the electric winger won the battle of the Fijian-born backs to see off Samu Kerevi and claim the Wallabies' highest individual honour.

"It's such an honour to be named with all the great players who've won this medal before. I still can't believe it. I wasn't expecting this," Koroibete said on Australian rugby's night of nights in Sydney.

The humble star said the gong meant everything to his family, but he singled out the outgoing Cheika for believing in him.

It was Cheika who lured Koroibete from the Melbourne Storm and blooded him on the Wallabies' 2016 spring tour of Europe. But he made the rookie wait almost another year before handing him his Test debut.

"Michael Cheika was the one who spoke to me. He's the one who moulded me to be here wearing this medal," Koroibete said.

"He didn't force me to play early. He took his time and encouraged me, gave me things six months by six months, and this year I've been working very hard with the (Melbourne) Rebels coaching staff, they've supported me as well.

"(Cheika) is such a great man, he mingled well with the boys.

"I like him as a coach. He's honest with you. If there's something you need to work on, he tells you straight. He doesn't beat around the bush.

"Unfortunately, he's not here anymore."

Koroibete's stunning form at the Rugby World Cup was enough for the 27-year-old to become the first winger bestowed with the country's premier player prize, awarded since 2002.

He polled 200 votes from his Wallabies teammates, 50 clear of second-placed Kerevi.

The soft-spoken speedster revealed his fierce will to win after joining the likes of multiple winners George Smith, Michael Hooper, David Pocock and fellow code-hopper Israel Folau on the honour roll, as well superstar playmakers Matt Giteau and Kurtley Beale.

"I hate losing," Koroibete said.

"I just go on the field: 'Where is the No.14?' I'm No.11, who is the No.14? Me and you tonight. That's my mentality. We'll go out there and see who the best player on the field is tonight.

"It's not about me versing the whole team. I set my goals tiny, me and my winger, compete with him.

"The game plan this year suited me very well, I liked it, and it was simple so I enjoyed it this year."

RUGBY AUSTRALIA AWARDS WINNERS

John Eales Medal: Marika Koroibete

Wallaroos player of the year: Grace Hamilton

Super Rugby player of the year: Samu Kerevi

Super W player of the year: Tayla Stanford

Rookie of the year: Men - Jordan Petaia, Women - Alysia Lefau-Fakaosilea

Sevens player of the year: Men - Maurice Longbottom, Women - Charlotte Caslick

Junior Wallabies player of the year: Fraser McReight

JOHN EALES MEDALLISTS

2019: Marika Koroibete

2018: David Pocock

2017: Israel Folau

2016: Michael Hooper

2015: Israel Folau

2014: Israel Folau

2013: Michael Hooper

2012: Nathan Sharpe

2011: Kurtley Beale

2010: David Pocock

2009: Matt Giteau

2008: George Smith

2007: Nathan Sharpe

2006: Chris Latham

2005: Jeremy Paul

2004: David Lyons

2003: Phil Waugh

2002: George Smith.

Australian Associated Press