Getting into the ring against Joseph Parker in Christchurch on Thursday will be an achievement in itself for Solomon Haumono, a former league player turned professional boxer who has confronted several personal demons.
The 40-year-old has admitted to using drugs during his NRL career and suffered from severe depression which led to several suicide attempts.
"I began using ice [meth] while I was still playing in the NRL. I am just so lucky it didn't take a hold of me like it has so many others," he said in an interview last year with the Sunday Telegraph.
Auckland-born Haumono, who played for several Australian league clubs, has admitted being addicted to drugs for decades. At his worst point, he was manufacturing his own drugs, including meth, and has also admitted using marijuana and cocaine.
Haumono followed his father Maile in becoming an Australian heavyweight champion. Raised in Sydney, he is of Tongan heritage and played in the Tonga side which almost upset the Kiwis at the 1995 World Cup.