Jerwin Ancajas has four losses against three opponents on his boxing record. For a list of Ancajas's best fights, refer to "Best fights of Jerwin Ancajas".
On February 24, 2024 Jerwin Ancajas faced off against Takuma Inoue in a featherweight bout at age 32. He was coming in with a record of 34-4-2 (23), and Inoue was 28 years old and with a record of 18-1 (4). Ancajas lost the fight via 9th-round KO.
On October 8, 2022 Jerwin Ancajas fought Fernando Martínez in a super-flyweight world-title fight for Martínez' IBF title. Ancajas was 30 years old and with a record of 33-3-2 (22), and Martínez was 31 years old and with a record of 14-0 (8). Ancajas lost the fight via 12-round unanimous decision.
On February 26, 2022 Jerwin Ancajas met Fernando Martínez in a super-flyweight (IBF) world-title defense fight. Ancajas was 30 years old and with a record of 33-2-2 (22), and Martínez was 30 years old and with a record of 13-0 (8). Ancajas lost the fight via 12-round unanimous decision and lost the title.
On March 17, 2012 Jerwin Ancajas faced off against Mark Anthony Geraldo in a super-flyweight bout at age 20. He was coming in with a record of 13-1-1 (5). Ancajas lost the fight via 10-round majority decision.
