Terence Crawford believes that he'll be viewed as one of the greatest boxers ever if he's able to defeat Canelo Alvarez in their highly anticipated fight on Sept. 13.

Terence Crawford admitted he can't fight at Canelo Alvarez's weight class in a clip that resurfaced from a couple years ago.

Canelo Alvarez and Terence Crawford are gearing up for a cross-divisional mega fight that has everyone talking, including a reigning welterweight world champion in boxing.