Fewest World Chess Champs Defeats

Fewest World Chess Champs Defeats
Who
Unknown
When
01 January 1900
Fewest chess games lost by a world champion
Jose Raul Capablanca (Cuba) (1888-1942) lost only 34 games (out of 571) in his adult career, 1909-39. He was unbeaten from 10 Feb 1916 to 21 Mar 1924 (63 games) and was world champion 1921-7.