On September 14, 1923, the 28-year-old The Ring heavyweight world champion, Jack Dempsey (56-4-9, 41 KOs), faced Luis Angel Firpo, in a title defense fight.
Dempsey came in to the fight on a 11-fight win streak with a 59% KO rate, and was fighting after a gap of 2 months and 10 days.
Jack Dempsey made very easy work of Luis Angel Firpo, stopping the challenger via KO in the 2nd. Dempsey improves his record to 57-4-9 (42 KOs)
On July 2, 1921, a 26-year-old Jack Dempsey (54-4-9, 40 KOs) and a 27-year-old French boxer Georges Carpentier (82-11-5, 50 KOs) met in the ring in a heavyweight bout.
Dempsey came in to the fight on a 9-fight win streak with a 59% KO rate, and was fighting after a gap of 6 months and 18 days. Carpentier was on a 12-fight win streak with a 51% KO rate, and fighting after a layoff of 8 months and 20 days.
Jack Dempsey stopped Georges Carpentier via KO in the 4th round. Dempsey improves his record to 55-4-9 (41 KOs), while Carpentier adds a loss to his record at 82-12-5.
On September 6, 1920, a 25-year-old Jack Dempsey (52-4-9, 38 KOs) and Billy Miske met in the ring for the 3rd time, in a heavyweight bout.
Dempsey came in to the fight on a 7-fight win streak with a 58% KO rate, and was fighting after a gap of 1 year, 2 months, and 2 days.
In the rematch, Jack Dempsey stopped Billy Miske via KO in the 3rd round. Dempsey improves his record to 53-4-9 (39 KOs)
On December 14, 1920, a 25-year-old Jack Dempsey (53-4-9, 39 KOs) and Bill Brennan met in the ring for the 2nd time, in a heavyweight bout.
Dempsey came in to the fight on a 8-fight win streak with a 59% KO rate, and was fighting after a gap of 3 months and 8 days.
In the rematch, Jack Dempsey stopped Bill Brennan via KO in the 12th round. Dempsey improves his record to 54-4-9 (40 KOs)
On July 4, 1919, a 24-year-old Jack Dempsey (51-4-9, 37 KOs) and a 37-year-old Jess Willard (24-5-2, 19 KOs) met in the ring in a heavyweight bout.
Dempsey came in to the fight on a 6-fight win streak with a 57% KO rate, and was fighting after a gap of 6 months and 4 days. Willard was on a 4-fight win streak with a 61% KO rate, and fighting after a layoff of 3 years, 3 months, and 9 days.
Jack Dempsey stopped Jess Willard via RTD in the 3rd round. Dempsey improves his record to 52-4-9 (38 KOs), while Willard adds a loss to his record at 24-6-2.
On February 14, 1918, a 22-year-old Jack Dempsey (33-3-9, 21 KOs) and Fireman Jim Flynn met in the ring for the 2nd time,.
Dempsey came in to the fight on a 6-fight win streak with a 46% KO rate, and was fighting after a gap of 10 days.
In the rematch, Jack Dempsey stopped Fireman Jim Flynn via KO in the 1st round. Dempsey improves his record to 34-3-9 (22 KOs)
On October 23, 1915, a 20-year-old Jack Dempsey (8-1-3, 7 KOs) and Andy Malloy met in the ring for the 2nd time,.
Dempsey came in to the fight on a 2-fight win streak with a 58% KO rate, and was fighting after a gap of 16 days.
In the rematch, Jack Dempsey stopped Andy Malloy via KO in the 3rd round. Dempsey improves his record to 9-1-3 (8 KOs)
On February 21, 1916, a 20-year-old Jack Dempsey (12-1-4, 11 KOs) and Jack Downey met in the ring for the 3rd time,.
Dempsey came in to the fight on a 2-fight win streak with a 64% KO rate, and was fighting after a gap of 16 days.
In the rematch, Jack Dempsey stopped Jack Downey via KO in the 2nd round. Dempsey improves his record to 13-1-4 (12 KOs)
On December 16, 1918, a 23-year-old Jack Dempsey (49-4-9, 35 KOs) and Carl Morris met in the ring for the 3rd time,.
Dempsey came in to the fight on a 4-fight win streak with a 56% KO rate, and was fighting after a gap of 18 days.
In the rematch, Jack Dempsey stopped Carl Morris via KO in the 1st round. Dempsey improves his record to 50-4-9 (36 KOs)
On July 1, 1918, a 23-year-old Jack Dempsey (40-3-9, 27 KOs) and Tom McCarty met in the ring.
Dempsey came in to the fight on a 13-fight win streak with a 51% KO rate, and was fighting after a gap of 1 month and 2 days.
Jack Dempsey stopped Tom McCarty via KO in the 1st round. Dempsey improves his record to 41-3-9 (28 KOs)