Here is a list of Martinez's best fights. For a list of Martinez's losses, refer to "Julio Cesar Martinez Losses".
On June 17, 2017 Julio Cesar Martinez faced off against Édgar Sosa at age 22. He was coming in with a record of 6-1 (3), and Sosa was 37 years old and with a record of 52-10 (30). Martinez won the fight via 8-round unanimous decision.
On March 30, 2024 Julio Cesar Martinez met Angelino Cordova in a flyweight (WBC) world-title defense fight. Martinez was 29 years old and with a record of 21-2 (15), and Cordova was 28 years old and with a record of 18-0-1 (12). Martinez won the fight via 12-round majority decision and successfully defended his title.
On December 20, 2019 Julio Cesar Martinez fought Cristofer Rosales in a flyweight world-title fight for the WBC title. Martinez was 24 years old and with a record of 15-1 (12), and Rosales was 25 years old and with a record of 29-4 (20). Martinez stopped Cristofer Rosales via 9th-round TKO and is crowned the new flyweight world champion.
On May 6, 2023 Julio Cesar Martinez met Ronal Batista in a flyweight (WBC) world-title defense fight. Martinez was 28 years old and with a record of 20-2 (15), and Batista was 26 years old and with a record of 15-2 (9). Martinez stopped Ronal Batista via 11th-round TKO and successfully defended his title.
On December 3, 2022 Julio Cesar Martinez met Samuel Carmona in a flyweight (WBC) world-title defense fight. Martinez was 27 years old and with a record of 19-2 (14), and Carmona was 26 years old and with a record of 7-0 (4). Martinez won the fight via 12-round majority decision and successfully defended his title.
On October 23, 2020 Julio Cesar Martinez met Moisés Calleros in a flyweight (WBC) world-title defense fight. Martinez was 25 years old and with a record of 17-1 (13). Martinez stopped Moisés Calleros via 2nd-round TKO and successfully defended his title.