Magnus Carlsen is a renowned Norwegian chess grandmaster and a five-time World Chess Champion. Known for his diverse playing style, he holds the record for the highest rating in history and the longest unbeaten streak in elite classical chess.
This is based on winning 4 head-to-head matchups with other famous people, but also losing 17 head-to-head matchups.
Most recently Magnus Carlsen lost a matchup to Billy Zane (#533) voted by someone from United States.