Jerson Mancio has six losses against six opponents on his boxing record. For a list of Mancio's best fights, refer to "Best fights of Jerson Mancio".
On February 21, 2015 Jerson Mancio faced off against Jonas Sultan at age 27. He was coming in with a record of 18-6-3 (9), and Sultan was 23 years old and with a record of 6-2 (3). Mancio lost the fight via 5th-round KO.
On May 14, 2014 Jerson Mancio faced off against Benezer Alolod in a light-flyweight bout at age 26. He was coming in with a record of 18-5-3 (9). Mancio lost the fight via 3rd-round retirement.
On December 6, 2013 Jerson Mancio faced off against Naoya Inoue in a light-flyweight bout at age 26. He was coming in with a record of 18-4-3 (9), and Inoue was 20 years old and with a record of 4-0 (3). Mancio lost the fight via 5th-round TKO.
On March 3, 2012 Jerson Mancio faced off against Junichi Ebisuoka at age 24. He was coming in with a record of 13-3-3 (5). Mancio lost the fight via 8-round unanimous decision.
On October 2, 2011 Jerson Mancio faced off against Ryo Miyazaki in a light-flyweight bout at age 24. He was coming in with a record of 13-2-3 (5). Mancio lost the fight via 4th-round KO.
On August 29, 2009 Jerson Mancio faced off against Marlon Tapales at age 21. He was coming in with a record of 7-1-1 (3), and Tapales was 17 years old and with a record of 8-1 (2). Mancio lost the fight via 10-round unanimous decision.
