When John L. Sullivan had a belt placed around his waist in 1885, he could not have imagined that 141 years later, that same lineage would face a challenge from outside boxing itself.
The lineal heavyweight championship has long been defined by a single principle — “the man who beat the man.”
From Sullivan to Jack Johnson, Joe Louis, Muhammad Ali, Mike Tyson, and Lennox Lewis, the lineage has provided boxing with its clearest and most consistent measure of supremacy, linking each champion directly to those who came before.
That continuity has survived retirements, disputes, and the rise of multiple sanctioning bodies. It has remained entirely within boxing.
Usyk vs Verhoeven Scenario
Oleksandr Usyk now holds that position at the top of the division, following his victories over Tyson Fury to remove any doubt over the number one spot.
His expected clash with kickboxing champion Rico Verhoeven on May 23 in Giza introduces a situation boxing has never had to deal with in clear terms.
If Verhoeven were to pull off a heavy underdog victory as a -1400 outsider, boxing would face the possibility of a kickboxer being recognized as the lineal heavyweight champion.
There is no physical title at stake. The Ring belt is not on the line, and the lineal championship has never existed in physical form. It is a recognition, not a trophy.
By definition, the lineage would pass. The man who beat the man would become the man, regardless of background, code, or discipline.
That is where the lineage begins to unravel.
For more than a century, the championship has passed through boxing alone. It has never had to account for a champion coming from outside the sport.
Verhoeven could, in theory, take the lineal crown and never compete in boxing again.
In that case, the lineage would not move forward in the usual way. Boxing would be left to decide how — or if — a new champion should be recognized.
Lineal Risk
Despite only a 7% probability of that upset, the risk is no longer theoretical.
Fights like this are no longer rare. Crossover bouts and changing promotional plans are creating situations the sport has never properly addressed.
The lineal championship has always been boxing’s most stable thread, built on results rather than interpretation.
If the man who beats the man is no longer a boxer, the definition stops being simple. Then the line is no longer clean.
For now, the lineage remains intact. But boxing is getting closer to a situation it may not be able to resolve cleanly.
These fights are now testing the formula.
As it stands, the full lineal heavyweight championship history remains clearly defined within boxing’s own structure, as tracked in full by World Boxing News.
About the Author
Phil Jay is the Editor-in-Chief of World Boxing News (WBN) and a veteran boxing reporter with 15+ years of experience. He has interviewed world champions, broken international exclusives, and reported ringside since 2010. Read full bio.
