Robert Yarnall has practiced martial arts for over 50 years. Bob taught at martial arts clubs throughout the St. Louis area. As an instructor he trained several individuals who became influencial black belts in karate. A few notable students who began their training under Jim Wax and continued training under Bob Yarnall in the St. Louis area were Bill March, Jim Harrison, Parker Shelton, Dave Nichols, and Mike George. Bill March was the first student to receive a black belt under Bob Yarnall.
Bob Yarnall was the winner of the first National Karate Championship was held in St. Louis in January of 1963 and he remained a consistent tournament winner throughout the 60's.
Bob was a police officer in St. Louis and was appointed the Chief of Police in a suburb of St. Louis and eventually became a City Councilman.
Bob Yarnall is a member of the Black Belt Hall of Fame and currently holds the title of Hanshi.