Heavyweight boxing’s lineal championship has survived for more than 140 years, but Oleksandr Usyk’s proposed farewell against Deontay Wilder could leave the historic title facing something more permanent than another vacancy. From John L. Sullivan through Muhammad Ali, Mike Tyson, Lennox Lewis, Tyson Fury and Usyk, World Boxing News recognizes 40 men as having occupied the position regarded as heavyweight boxing’s ultimate crown. Zuffa Boxing intends to crown its own heavyweight champion, which could even be the Usyk vs Wilder fight, and has indicated a willingness to work with boxing’s established sanctioning bodies in some cases.