Rick Riordan is a celebrated American author renowned for his series Percy Jackson & the Olympians. His works, translated into 42 languages, have sold over 30 million copies in the U.S., inspiring adaptations and related media.
This is based on winning 2 head-to-head matchups with other famous people, but also losing 25 head-to-head matchups.
Most recently Rick Riordan lost a matchup to Peyton Manning (#940) voted by someone from Austria.