Parker vs Joshua: Heavyweight ab showdown at pre-fight press conference

The battle of the heavyweights has become the battle of the abs with Anthony Joshua stripping off for Newshub to flaunt his eight-pack.

Joseph Parker had told his London fans he's fitter and faster than ever, so much so that there had been an unprecedented appearance of a duo of abdominal muscles in his mid-section.

Parker vs Joshua: Heavyweight ab showdown at pre-fight press conference

When Newshub put that to Joshua he responded by simply pulling up his top.

"Look at this," he said laughing, "I've got eight".

Undaunted, Parker hit back saying, "let's see if his eight-pack can get me out of the ring. Let's see if his eight-pack can help him in the ring. If I punch the eight-pack, it'll be sore".

The two fighters will settle matters at their title unification bout at Principality Stadium in Cardiff on Sunday morning (NZT).

Newshub.