In 1923 Luis Firpo knocked this heavyweight champ out of the ring in the first round but was KO'd in the second round
... Tunney 
dominated the first six rounds, but in round seven Dempsey ... On this date in 
1923, Jack Dempsey was knocked out of the ring by Luis Firpo, the... [DOC] [TLE] Welcome to The Boxing Amusement Park - The Ringside Boxing Show [PAR] Armstrong had knocked out Petey Sarron for the featherweight title in 1937, and 
then, ...