Audley Harrison has insisted that "the fire is still burning" as he prepares for the heavyweight Prizefighter tournament on Saturday night.
The former Olympic champion had been expected to retire after he was dismantled in 82 seconds by David Price in his last fight, but the 41-year-old believes that he still has the passion to succeed in the sport.
Harrison told a press conference: "Going through that adversity, like I have done many times in my career and my life, just sets you apart. The fire is still burning.
"I will turn up on Saturday night, cool, calm and collected."
The former world title challenger will face Claus Bertino in his opening match of the eight-man tournament.