Jack Root, George Gardner, and Bob Fitzsimmons all held the light heavyweight world championship title in 1903.

During the 1980s, however, some boxing historians found records indicating that Joe Choynski won a twenty-round decision over Jimmy Ryan on August 18, 1899, in a fight billed as being for the light heavyweight championship.

[2] On July 3, 1905, Root fought Marvin Hart for the vacant world heavyweight championship in Reno Nevada.

After his time in the service Root became the president and boxing manager of the renowned Los Angeles Olympic Auditorium.

[3] Root died on June 10, 1963, at Temple Hospital in Los Angeles from a heart attack, aged 87.