Crawford: 'A win will make me one of the greatest fighters of all time'

UFC chief Dana White's fiery exchange with a reporter about his new role in boxing threatened to overshadow a news conference for the super-fight between Saul 'Canelo' Alvarez and Terence Crawford.

Mexican Alvarez, 35, will put his WBA (Super), WBC, WBO and IBF super-middleweight titles on the line against Crawford at the Allegiant Stadium in Las Vegas on Saturday.

Omaha-native Crawford, 37, is jumping up two weight classes in a bid to become the first male boxer to become undisputed champion in three divisions in the modern era.

In front of a fiercely pro-Alvarez crowd, the pair went through the usual news conference motions, a mixture of respect and declarations of victory.