Here is a list of Johnson's best fights. For a list of Johnson's losses, refer to "Callum Johnson Losses".
On March 24, 2018 Callum Johnson faced off against Frank Buglioni in a light-heavyweight bout at age 32. He was coming in with a record of 17-0 (12), and Buglioni was 28 years old and with a record of 21-2-1 (15). Johnson stopped Frank Buglioni via TKO.
On March 9, 2019 Callum Johnson faced off against Sean Monaghan at age 33. He was coming in with a record of 18-1 (13), and Monaghan was 37 years old and with a record of 29-2 (17). Johnson stopped Sean Monaghan via TKO.
On April 24, 2021 Callum Johnson faced off against Emil Markic in a light-heavyweight bout at age 35. He was coming in with a record of 19-1 (14). Johnson stopped Emil Markic via TKO.