Many NFL fans know Highsmith from his time as a player and as an executive. These days he’s working with the University of Miami but he had another career before his return to football. Highsmith entered the world of boxing and fought 30 times before he hung up his gloves for good.
It may seem unfair to include him on this list because this is a significant record. However, there’s no denying that some of these were freak shows against subpar opponents. They made him appear to be better than he was and included fellow former footballer Mark Gastineau (via The Athletic).