Here is a list of Gagnon's best fights. For a list of Gagnon's losses, refer to "Mitch Gagnon Losses".
On September 22, 2012 Mitch Gagnon faced off against Walel Watson in a bantamweight bout at age 27. He was coming in with a record of 9-2 (9), and Watson was 28 years old and with a record of 9-4 (9). Gagnon stopped Walel Watson via submission.
On September 21, 2013 Mitch Gagnon faced off against Dustin Kimura in a bantamweight bout at age 28. He was coming in with a record of 10-2 (9), and Kimura was 24 years old and with a record of 10-0 (9). Gagnon stopped Dustin Kimura via choke-out.
On October 4, 2014 Mitch Gagnon faced off against Roman Salazar in a bantamweight bout at age 29. He was coming in with a record of 12-2 (10), and Salazar was 26 years old and with a record of 9-2 (6). Gagnon stopped Roman Salazar via submission.
On April 16, 2014 Mitch Gagnon faced off against Tim Gorman in a bantamweight bout at age 29. He was coming in with a record of 11-2 (9). Gagnon won the fight via 3-round unanimous decision.