British champion Fabio Wardley says all the pressure is on Frazer Clarke in their heavyweight fight on 31 March.
Both men promised knockouts in a news conference on Thursday that started cordially but ended with the pair questioning each other’s record.
Clarke, an Olympic medallist, trashed Wardley’s white collar background.
“I would absolutely do what he’s done and he could never do what I’ve done and that’s the fact of it,” Clarke said.
“That white collar boxing, ultimately it’s just the hardest kids in town having a scrap.
“They just want to go and have a punch up in a random social club, sell a few tickets and become the talk of their town.”
Clarke, 32, declared himself the underdog in the contest with 29-year-old Wardley having twice the amount of fights as a professional.
Wardley is undefeated in 17 fights since turning pro in 2017.