By Jack Figg and Stuart Atkins,

Underdog can become the first Mexican heavyweight world champion and AJ’s promoter claimed the California born will ‘be a national hero’ if he pulls off the mammoth upset:

Jarrell Miller was the initial opponent but after a trio of failed drug tests a replacement was found – and quick handed, 18stone Ruiz was given the life changing opportunity.

Ruiz can become the first Mexican heavyweight world champion and Hearn claimed the California born will “be a national hero” if he pulls off the mammoth upset.

Hearn told the LA Times: “When I heard this [Ruiz], I thought, ‘This guy really wants it’.

“He thinks he can win. This is a tough fight. This kid can fight. This guy has Mexico behind him.

“Andy Ruiz is not carved out of stone, but once this begins, this a real credible fight.

“There’s going to be a lot of British fans, a lot of Americans and a lot of Mexicans [in New York] because he has the chance to become the first Mexican heavyweight champion, and that’s an opportunity that may never happen again.