Here is a list of Gaethje's best fights. For a list of Gaethje's losses, refer to "Justin Gaethje Losses".
On July 29, 2023 Justin Gaethje faced off against Dustin Poirier in a lightweight bout at age 34. He was coming in with a record of 25-4 (21), and Poirier was 34 years old and with a record of 29-7 (22). Gaethje stopped Dustin Poirier via KO.
On May 9, 2020 Justin Gaethje fought Tony Ferguson in a lightweight title fight for Ferguson's UFC Championship title. Gaethje was 31 years old and with a record of 22-2 (20), and Ferguson was 36 years old and with a record of 25-3 (20). Gaethje stopped Tony Ferguson via 5th-round TKO and is crowned the new UFC lightweight champion.
On March 30, 2019 Justin Gaethje faced off against Edson Barboza in a lightweight bout at age 30. He was coming in with a record of 20-2 (18), and Barboza was 33 years old and with a record of 20-6 (13). Gaethje stopped Edson Barboza via KO.
On August 25, 2018 Justin Gaethje faced off against James Vick in a lightweight bout at age 29. He was coming in with a record of 19-2 (17), and Vick was 31 years old and with a record of 13-1 (8). Gaethje stopped James Vick via KO.
On September 18, 2015 Justin Gaethje met Luis Palomino in a lightweight (WSOF Championship) title defense fight. Gaethje was 26 years old and with a record of 15-0 (13), and Palomino was 34 years old and with a record of 23-10 (15). Gaethje stopped Luis Palomino via 2nd-round TKO and successfully defended his title.
On September 14, 2019 Justin Gaethje faced off against Donald Cerrone in a lightweight bout at age 30. He was coming in with a record of 21-2 (19), and Cerrone was 36 years old and with a record of 36-12 (27). Gaethje stopped Donald Cerrone via TKO.
On March 8, 2025 Justin Gaethje faced off against Rafael Fiziev in a lightweight bout at age 36. He was coming in with a record of 26-5 (21), and Fiziev was 32 years old and with a record of 12-3 (9). Gaethje won the fight via 3-round unanimous decision.
On March 12, 2016 Justin Gaethje met Brian Foster in a lightweight (WSOF Championship) title defense fight. Gaethje was 27 years old and with a record of 16-0 (14), and Foster was 31 years old and with a record of 26-8 (25). Gaethje stopped Brian Foster via 1st-round TKO and successfully defended his title.
On July 5, 2014 Justin Gaethje met Nick Newell in a lightweight (WSOF Championship) title defense fight. Gaethje was 25 years old and with a record of 12-0 (11), and Newell was 28 years old and with a record of 11-0 (10). Gaethje stopped Nick Newell via 2nd-round TKO and successfully defended his title.
On November 6, 2021 Justin Gaethje faced off against Michael Chandler in a lightweight bout at age 32. He was coming in with a record of 23-3 (20), and Chandler was 35 years old and with a record of 22-6 (15). Gaethje won the fight via 3-round unanimous decision.
