Here is a list of Mullarkey's best fights. For a list of Mullarkey's losses, refer to "Jamie Mullarkey Losses".
On March 27, 2021 Jamie Mullarkey faced off against Khama Worthy in a lightweight bout at age 26. He was coming in with a record of 13-4 (12), and Worthy was 34 years old and with a record of 16-7 (12). Mullarkey stopped Khama Worthy via KO.
On October 2, 2021 Jamie Mullarkey faced off against Devonte Smith in a lightweight bout at age 27. He was coming in with a record of 14-4 (13), and Smith was 28 years old and with a record of 11-2 (11). Mullarkey stopped Devonte Smith via TKO.
On February 12, 2023 Jamie Mullarkey faced off against Francisco Prado in a lightweight bout at age 28. He was coming in with a record of 16-5 (13). Mullarkey won the fight via 3-round unanimous decision.
On September 10, 2023 Jamie Mullarkey faced off against John Makdessi in a lightweight bout at age 29. He was coming in with a record of 17-6 (13), and Makdessi was 38 years old and with a record of 18-8 (9). Mullarkey won the fight via 3-round unanimous decision.
On July 9, 2022 Jamie Mullarkey faced off against Michael Johnson in a lightweight bout at age 27. He was coming in with a record of 15-5 (13), and Johnson was 36 years old and with a record of 20-17 (11). Mullarkey won the fight via 3-round split decision.