Rocky Marciano was an iconic American professional boxer who held the world heavyweight championship from 1952 to 1956 and is renowned for finishing his career undefeated. He was celebrated for his relentless fighting style and formidable punching power.
This is based on winning 4 head-to-head matchups with other famous people, but also losing 25 head-to-head matchups.
Most recently Rocky Marciano lost a matchup to Adam Lambert (#757) voted by someone from United States.