Here is a list of Ancajas's best fights. For a list of Ancajas's losses, refer to "Jerwin Ancajas Losses".
On May 26, 2018 Jerwin Ancajas met Jonas Sultan in a super-flyweight (IBF) world-title defense fight. Ancajas was 26 years old and with a record of 30-1-1 (20), and Sultan was 26 years old and with a record of 14-3 (8). Ancajas won the fight via 12-round unanimous decision and successfully defended his title.
On September 3, 2016 Jerwin Ancajas fought McJoe Arroyo in a super-flyweight world-title fight for Arroyo's IBF title. Ancajas was 24 years old and with a record of 25-1-1 (16), and Arroyo was 30 years old and with a record of 17-0 (8). Ancajas won the fight via 12-round unanimous decision and is crowned the new super-flyweight world champion.
On February 3, 2018 Jerwin Ancajas met Israel González in a super-flyweight (IBF) world-title defense fight. Ancajas was 26 years old and with a record of 29-1-1 (20), and González was 21 years old and with a record of 21-1 (8). Ancajas stopped Israel González via 10th-round TKO and successfully defended his title.
On May 3, 2014 Jerwin Ancajas faced off against Petchwanchai Sor Visetkit in a super-flyweight bout at age 22. He was coming in with a record of 20-1-1 (12). Ancajas stopped Petchwanchai Sor Visetkit via KO.
On June 24, 2023 Jerwin Ancajas fought Wilner Soto in a bantamweight world-title fight for Soto's WBA title. Ancajas was 31 years old and with a record of 34-3-2 (23). Ancajas stopped Wilner Soto via 5th-round TKO and is crowned the new bantamweight world champion.
On August 30, 2013 Jerwin Ancajas faced off against Armando Casa in a bantamweight bout at age 21. He was coming in with a record of 17-1-1 (9). Ancajas stopped Armando Casa via TKO.
On January 25, 2025 Jerwin Ancajas faced off against Richie Mepranum in a featherweight bout at age 33. He was coming in with a record of 36-4-2 (24). Ancajas stopped Richie Mepranum via TKO.
