Reinhold Messner is an Italian mountaineer, adventurer, and explorer known for being the first person to climb all 14 eight-thousanders without supplemental oxygen. He also made the first solo ascent of Mount Everest without supplemental oxygen.
This is based on winning 1 head-to-head matchups with other famous people, but also losing 16 head-to-head matchups.
Most recently Reinhold Messner lost a matchup to Jerry Springer (#846) voted by someone from United States.