
Justin Gaethje, who goes by the moniker “The Highlight,” is an American mixed martial artist born on November 14, 1988, in Safford, Arizona. The Arizona native competes in the 155 lb (lightweight) division of the Ultimate Fighting Championship (UFC).
Gaethje made his UFC debut on July 7, 2017, against Michael “The Menace” Johnson, winning the bout via TKO in the second round and receiving the Fight of the Night and Performance of the Night honors. Gaethje’s next career milestone was winning the interim UFC Lightweight Championship on May 9, 2020, with a TKO win over Tony Ferguson at UFC 249. Later on, Gaethje won the “Baddest Mother****er” title (BMF) with a second-round head kick knockout of Dustin Poirier at UFC 291 on July 29, 2023, which he would later lose to Max Holloway at UFC 300. Ranked #3 in the lightweight division of the UFC as of March 3, 2025, Gaethje’s next bout is a rematch against Rafael “Altman” Fiziev at UFC 313 on March 8, 2025.
Justin Gaethje Coach

Justin Gaethje trains under Trevor Wittman, a coach and the owner of ONX Sports, a company that makes equipment for combat sports. Wittman was a former boxer who transitioned to a coaching career due to a medical condition. He started training and in 1998, opened the T's K.O. Fight Club, later known as the Grudge Training Center, where he trained several fighters.
Wittman closed Grudge in 2016 to focus on a select group of fighters, including Gaethje, Rose Namajunas, and Kamaru Usman. Gaethje has been training under Wittman since 2011, and he continues to have him in his corner.
Also Read: Justin Gaethje's Twin Brother
Justin Gaethje Manager
Justin Gaethje is managed by Ali Abdelaziz, the founder of Dominance MMA Management. Dominance MMA has grown under his leadership to represent several UFC champions like Khabib Nurmagomedov, Kamaru Usman, Islam Makhachev, and Henry Cejudo.
Also Read: Justin Gaethje's MMA Record
FAQs on Justin Gaethje
A. Justin Gaethje is coached by Trevor Wittman.
A. Justin Gaethje fights out of Denver, Colorado, U.S.
A. Justin Gaethje is managed by Ali Abdelaziz.
A. As of March 2025, Justin Gaethje is 36 years old.