The title of "Boxing Bible" in this weight category has been vacant since 2015. Its last owner was Floyd Mayweather Jr.
Both boxers are expected to earn at least $10 million for this fight. Both fighters will also have the right to activate a rematch clause in the event of a loss within 30 days of the fight.
The event will be shown in the United States on Showtime pay-per-view. Crawford defeated David Avanesyan in his last appearance in the ring, and Spence won the unification fight against Yordenis Ugas.