On November 18, 2017, the 25-year-old IBF super-flyweight world champion, Jerwin Ancajas (27-1-1, 18 KOs), faced Jamie Conlan, in a title defense fight.
Ancajas came in to the fight on a 14-fight win streak with a 62% KO rate, and was fighting after a gap of 4 months and 16 days.
Jerwin Ancajas stopped Jamie Conlan via TKO in the 6th round of the 12-round world-title fight, and successfully defended his IBF super-flyweight title. Ancajas improves his record to 28-1-1 (19 KOs)
On May 4, 2019, the 27-year-old IBF super-flyweight world champion, Jerwin Ancajas (30-1-2, 20 KOs), faced Ryuichi Funai, in a title defense fight.
Ancajas came in to the fight after a draw in his last fight with a 60% KO rate, and was fighting after a gap of 7 months and 6 days.
The challenger refused to continue the fight in the 6th round, and Jerwin Ancajas is crowned the new super-flyweight world champion. Ancajas improves his record to 31-1-2 (21 KOs)
On July 2, 2017, the 25-year-old IBF super-flyweight world champion, Jerwin Ancajas (26-1-1, 17 KOs), faced Teiru Kinoshita, in a title defense fight.
Ancajas came in to the fight on a 13-fight win streak with a 60% KO rate, and was fighting after a gap of 5 months and 3 days.
Jerwin Ancajas stopped Teiru Kinoshita via TKO in the 7th round of the 12-round world-title fight, and successfully defended his IBF super-flyweight title. Ancajas improves his record to 27-1-1 (18 KOs)
On January 29, 2017, the 25-year-old IBF super-flyweight world champion, Jerwin Ancajas (25-1-1, 16 KOs), faced José Alfredo Rodríguez, in a title defense fight.
Ancajas came in to the fight on a 12-fight win streak with a 59% KO rate, and was fighting after a gap of 4 months and 26 days.
The challenger refused to continue the fight in the 7th round, and Jerwin Ancajas is crowned the new super-flyweight world champion. Ancajas improves his record to 26-1-1 (17 KOs)
On February 3, 2018, the 26-year-old IBF super-flyweight world champion, Jerwin Ancajas (28-1-1, 19 KOs), faced a 21-year-old Mexican boxer Israel González (21-1, 8 KOs), in a title defense fight.
Ancajas came in to the fight on a 15-fight win streak with a 63% KO rate, and was fighting after a gap of 2 months and 16 days. González was on a 8-fight win streak with a 36% KO rate, and fighting after a layoff of 3 months.
Jerwin Ancajas stopped Israel González via TKO in the 10th round of the 12-round world-title fight, and successfully defended his IBF super-flyweight title. Ancajas improves his record to 29-1-1 (20 KOs), while González adds a loss to his record at 21-2.
On December 7, 2019, the 27-year-old IBF super-flyweight world champion, Jerwin Ancajas (31-1-2, 21 KOs), faced Miguel Gonzalez, in a title defense fight.
Ancajas came in to the fight on a 1-fight win streak with a 61% KO rate, and was fighting after a gap of 7 months and 3 days.
Jerwin Ancajas stopped Miguel Gonzalez via TKO in the 6th round of the 12-round world-title fight, and successfully defended his IBF super-flyweight title. Ancajas improves his record to 32-1-2 (22 KOs)
On May 26, 2018, the 26-year-old IBF super-flyweight world champion, Jerwin Ancajas (29-1-1, 20 KOs), faced a 26-year-old fellow Filipino boxer Jonas Sultan (14-3, 8 KOs), in a title defense fight.
Ancajas came in to the fight on a 16-fight win streak with a 64% KO rate, and was fighting after a gap of 3 months and 23 days. Sultan was on a 5-fight win streak with a 47% KO rate, and fighting after a layoff of 8 months and 10 days.
Jerwin Ancajas defeated Jonas Sultan via unanimous decision and successfully defended his IBF super-flyweight title. Ancajas improves his record to 30-1-1, while Sultan adds a loss to his record at 14-4.
On September 3, 2016, a 24-year-old Jerwin Ancajas (24-1-1, 16 KOs) got a shot at the IBF super-flyweight title held by McJoe Arroyo.
Ancajas came in to the fight on a 11-fight win streak with a 61% KO rate, and was fighting after a gap of 9 months and 21 days.
Jerwin Ancajas defeated McJoe Arroyo via unanimous decision and wins the IBF title — in his first world-title fight. Ancajas improves his record to 25-1-1
On April 10, 2021, the 29-year-old IBF super-flyweight world champion, Jerwin Ancajas (32-1-2, 22 KOs), faced Jonathan Javier Rodriguez, in a title defense fight.
Ancajas came in to the fight on a 2-fight win streak with a 62% KO rate, and was fighting after a gap of 1 year, 4 months, and 3 days.
Jerwin Ancajas defeated Jonathan Javier Rodriguez via unanimous decision and successfully defended his IBF super-flyweight title. Ancajas improves his record to 33-1-2
On February 22, 2014, a 22-year-old Jerwin Ancajas (18-1-1, 10 KOs) and Inthanon Sithchamuang met in the ring.
Ancajas came in to the fight on a 5-fight win streak with a 50% KO rate, and was fighting after a gap of 2 months and 8 days.
Jerwin Ancajas stopped Inthanon Sithchamuang via KO in the 2nd round. Ancajas improves his record to 19-1-1 (11 KOs)