Mere moments after Canelo Alvarez won his May 3 fight against William Scull, pound-for-pound great Terence Crawford entered the ring to face off with him. This finalized what has been the worst-kept secret in the boxing world over the past few months: That Canelo and Crawford are going to fight later this year.

White sees an opportunity to introduce the UFC style of matchmaking and promotion to boxing, as the sport is being criticized for its splintered titles, occasional mega-fights, and promotional confli...