On October 4, 1940, a 27-year-old Fritzie Zivic (100-24-5, 52 KOs) got a shot at the The Ring welterweight title held by 27-year-old Henry Armstrong (111-13-8, 76 KOs).
Zivic came in to the fight on a 6-fight win streak with a 40% KO rate, and was fighting after a gap of 1 month and 5 days. Armstrong was on a 5-fight win streak with a 57% KO rate, and fighting after a layoff of 11 days.
Fritzie Zivic defeated Henry Armstrong via unanimous decision and wins the The Ring title — in his first world-title fight. Zivic improves his record to 101-24-5, while Armstrong adds a loss to his record at 111-14-8.
On January 17, 1941, Fritzie Zivic and Henry Armstrong met again in a rematch.
Zivic came in to the fight after a draw in his last fight with a 39% KO rate, and was fighting after a gap of 28 days. Armstrong was on a -1-fight win streak with a 57% KO rate, and fighting after a layoff of 3 months and 13 days.
In the rematch, Fritzie Zivic stopped Henry Armstrong via TKO in the 12th round of the 15-round world-title fight, and successfully defended his The Ring welterweight title. Zivic improves his record to 104-24-6 (54 KOs), while Armstrong adds a loss to his record at 111-15-8.
On July 10, 1933, a 20-year-old Fritzie Zivic (13-3, 9 KOs) and Don Asto met in the ring for the 2nd time,.
Zivic came in to the fight on a 7-fight win streak with a 56% KO rate, and was fighting after a gap of 14 days.
In the rematch, Fritzie Zivic stopped Don Asto via TKO in the 3rd round. Zivic improves his record to 14-3 (10 KOs)
On May 22, 1936, a 23-year-old Fritzie Zivic (36-15-4, 18 KOs) and Billy Celebron met in the ring for the 2nd time,.
Zivic came in to the fight on a 1-fight losing streak with a 32% KO rate, and was fighting after a gap of 1 month and 5 days.
In the rematch, Fritzie Zivic stopped Billy Celebron via KO in the 1st round. Zivic improves his record to 37-15-4 (19 KOs)
On March 9, 1942, a 28-year-old Fritzie Zivic (114-29-7, 59 KOs) and Izzy Jannazzo met in the ring.
Zivic came in to the fight on a 1-fight losing streak with a 39% KO rate, and was fighting after a gap of 10 days.
Fritzie Zivic stopped Izzy Jannazzo via RTD in the 4th round. Zivic improves his record to 115-29-7 (60 KOs)
On July 6, 1936, a 23-year-old Fritzie Zivic (40-15-4, 21 KOs) and Laddie Tonielli met in the ring for the 2nd time,.
Zivic came in to the fight on a 4-fight win streak with a 35% KO rate, and was fighting after a gap of 4 days.
In the rematch, Fritzie Zivic stopped Laddie Tonielli via TKO in the 4th round. Zivic improves his record to 41-15-4 (22 KOs)
On July 27, 1942, a 29-year-old Fritzie Zivic (120-31-7, 63 KOs) and Norman Rubio met in the ring for the 2nd time,.
Zivic came in to the fight on a 1-fight losing streak with a 39% KO rate, and was fighting after a gap of 28 days.
In the rematch, Fritzie Zivic stopped Norman Rubio via TKO in the 9th round. Zivic improves his record to 121-31-7 (64 KOs)
On February 11, 1937, a 23-year-old Fritzie Zivic (48-17-4, 26 KOs) and a 28-year-old Johnny Jadick (99-52-8, 16 KOs) met in the ring for the 2nd time,.
Zivic came in to the fight on a 1-fight losing streak with a 37% KO rate, and was fighting after a gap of 1 month and 14 days. Jadick was on a -4-fight win streak with a 10% KO rate, and fighting after a layoff of 8 days.
In the rematch, Fritzie Zivic stopped Johnny Jadick via KO in the 6th round. Zivic improves his record to 49-17-4 (27 KOs), while Jadick adds a loss to his record at 99-53-8.
On September 15, 1941, a 28-year-old Fritzie Zivic (110-26-6, 57 KOs) and Milt Aron met in the ring for the 2nd time,.
Zivic came in to the fight on a 1-fight losing streak with a 40% KO rate, and was fighting after a gap of 1 month and 17 days.
In the rematch, Fritzie Zivic stopped Milt Aron via KO in the 5th round. Zivic improves his record to 111-26-6 (58 KOs)
On October 24, 1939, a 26-year-old Fritzie Zivic (85-21-5, 45 KOs) and a 26-year-old Mexican boxer Kid Azteca (102-18-6, 48 KOs) met in the ring.
Zivic came in to the fight on a 2-fight win streak with a 40% KO rate, and was fighting after a gap of 1 month and 3 days. Azteca was on a 3-fight win streak with a 38% KO rate, and fighting after a layoff of 1 month and 7 days.
Fritzie Zivic defeated Kid Azteca via unanimous decision in the 10-round fight. Zivic improves his record to 86-21-5, while Azteca adds a loss to his record at 102-19-6.