Carlston Harris

Carlston Harris is the first Guyanese fighter to compete in the UFC, a distinction earned through more than a decade of grinding in regional and international promotions. Born in 1987 in Skeldon, Guyana, Harris emigrated to Brazil in 2007 seeking work and initially took jobs as a mechanic, boxer, and nightclub security. His breakthrough came after watching a B.J. Penn fight on a pirated DVD; inspired, he committed to mixed martial arts and trained under Marcio "Cromado" Ramos Barbosa at Renovação Fight Team in Rio de Janeiro. That dedication paid off: by 2017, Harris had captured the Brave Combat Federation Welterweight Championship, establishing himself as a legitimate regional threat before a loss in his title defense sent him back to the regional circuit.

Harris finally secured his UFC shot in 2021 after an impressive performance at UAE Warriors 15 in front of Dana White himself. His octagon debut in May 2021 against Christian Aguilera was explosive: a first-round anaconda choke that earned Performance of the Night honors and announced his technical submission prowess at the sport's highest level. Over the next two years, he added another submission star against Jeremiah Wells (August 2023, also a Performance of the Night), punctuating his work as a slick grappler with lethal late-round finishing instincts.

However, Harris has consistently struggled against elite strikers and top-ranked competition. Shavkat Rakhmonov finished him in the opening round with a spinning kick in February 2022; Khaos Williams delivered a devastating knockout just 90 seconds into their May 2024 bout; Santiago Ponzinibbio stopped him in the third round in January 2025. Most recently, in May 2026, Australian welterweight Jake Matthews dismantled Harris across three rounds with superior boxing, grappling, and pace, handing him a unanimous decision loss. Now 38 years old, Harris remains active in the welterweight division but faces the reality that his window for significant advancement is narrowing. His profile is that of a durable veteran with genuine submission skills and a remarkable personal story, but also a fighter whose limitations against high-level striking have become painfully apparent.