‘The Man’ played 127 NRL games for the Dragons and Brisbane Broncos as well as three Origins for NSW before his shock switch to the fight game in 2000.
Mundine (47-7) has won world title belts and is in the conversation for Australia’s best-ever multi-sport athlete.
But the lack of love he believes rugby league selectors showed him back in the day clearly still eats at the polarising pugilist.
“I talked out from the get go because they’d never given me my props in league,” Mundine told Fox Sports News 500.
“I whipped (Laurie) Daley, I whipped (Brad) Fittler, continuously.
“Not one time, two times, three times, four, five. I’m talking five years - over five years straight.
“It cut me deep, man. They had to pick me in the State of Origin and then they messed me around, playing me off the bench, playing me in positions I’d never played before — in the forwards, in the hooking role.
“At the end of ‘99 they took a team to England. They picked two squads, like 42 players to go — I wasn’t even part of that and I was the best statistically that year.
“We made the grand final and I whipped what they called the best in Brad Fittler all year - my statistics were second to none so that’s why I left … no equality, man.”