Four Perfect Boxing Records Leave Unanswered Questions

Ken Hissner argues that undefeated boxing records do not definitively prove invincibility, examining champions Rocky Marciano, Floyd Mayweather Jr., Joe Calzaghe, and Terence Crawford. While praising their accomplishments, Hissner contends that retiring without a loss preserves a perfect record while leaving major hypothetical matchups and emerging contenders unresolved across different eras of boxing.

Hissner notes potential unanswered tests for each fighter, including Sonny Liston for Marciano, Keith Thurman for Mayweather, Carl Froch for Calzaghe, and contenders like Jaron Ennis or Christian Mbilli for Crawford. The writer concludes that evaluating these legendary careers requires acknowledging the dangerous opponents each fighter left unfought.