Eddy Merckx is a Belgian former professional cyclist known as the most successful rider in the history of competitive cycling. He achieved an unparalleled 525 victories, including 11 Grand Tours, 5 Monuments, and numerous other races.
This is based on winning 3 head-to-head matchups with other famous people, but also losing 18 head-to-head matchups.
Most recently Eddy Merckx lost a matchup to Jeff Daniels (#184) voted by someone from United States.