American · Lafayette, Louisiana · Born 19 January 1989Dustin 'The Diamond' Poirier retired in 2025 as a beloved UFC lightweight legend, a former interim champion who twice defeated Conor McGregor.
Dustin Glenn Poirier was born on 19 January 1989 in Lafayette, Louisiana, of Cajun heritage, and turned professional in mixed martial arts in 2009, training with American Top Team in Coconut Creek, Florida, and developing into one of the most beloved and durable lightweights in UFC history. Poirier, nicknamed "The Diamond," won the interim UFC Lightweight Championship in 2019, defeating Max Holloway, before challenging for the undisputed title three times across his career, including a widely praised trilogy of fights against Conor McGregor between 2014 and 2021, in which Poirier won the final two meetings. Poirier is tied with McGregor for the record of most finishes in UFC lightweight history, and became one of the most respected voices in the sport for his sportsmanship, donating extensively to charitable causes through The Good Fight Foundation, established with his wife, Jolie. Poirier retired from professional competition in 2025 after a 17-year career, closing out one of the most consistently entertaining and hard-fought resumes in UFC history, having never held undisputed gold despite being widely regarded as one of the finest lightweights never to do so.
Former Interim UFC Lightweight Champion; two-time victor over Conor McGregor; retired 2025
How They Played
Poirier is known for his exceptional boxing skills, particularly his left hook and uppercut combinations. He combines technical striking with excellent cardio and mental toughness, often finding success in later rounds when opponents fade.
Lasting Impact
Poirier has helped elevate the popularity of MMA in Louisiana and is respected for his warrior mentality and sportsmanship.
Career Honours
- Interim UFC Lightweight Champion 2019
- three-time undisputed UFC Lightweight title challenger
- two career wins over Conor McGregor
American Athletes