Recently, after a storied career culminating in his announced retirement following UFC 318, Dustin “The Diamond” Poirier, a name synonymous with grit and heart in the Ultimate Fighting Championship, offered a rare glimpse into the physical toll of his profession. In a sport where every punch carries potential consequence, Poirier, known for his incredible durability, revealed the specific moments and opponents that truly tested the very limits of his remarkable chin and resolve.

The Unforgettable Power of Justin Gaethje`s Head Kick
For a fighter who has stood toe-to-toe with the most dangerous strikers on the planet, a peculiar badge of honor lies in identifying the one strike that eclipsed all others in its sheer concussive force. For Dustin Poirier, that distinction belongs unequivocally to Justin Gaethje’s head kick at UFC 291. Such pronouncements, delivered with the characteristic calm of a man who has walked through fire, carry significant weight.
“Head kick from Gaethje was a nasty one.”
This wasn`t merely a knockout; it was a moment that sent shockwaves through the lightweight division, ending a seven-year streak during which Poirier had remained impervious to such definitive KOs. Gaethje, celebrated for his relentless pressure and devastating power, delivered a strike that transcended the usual discourse of a fight, becoming a benchmark for the raw power present within the sport.
Conor McGregor`s Early Impact
Another name on Poirier`s list of formidable power-punchers might surprise those who only witnessed their later encounters: Conor McGregor. While Poirier would famously defeat McGregor twice in their subsequent rematches, it was their inaugural featherweight clash in 2014 at UFC 178 that saw the Irishman land a punch potent enough to etch itself into Poirier`s memory.
“First fight with Conor was a good spot… He hit me with a good punch.”
McGregor`s TKO victory in that fight demonstrated the early, explosive power he possessed, a power that, even after years of shared Octagon time, remains a vivid recollection for “The Diamond.” It’s a testament to the evolving nature of a fighter’s career—where early setbacks become defining moments, not just for the loss, but for the lessons learned and the resilience cultivated.
A Chin Forged in Fire: The Holloway Test and Beyond
While Gaethje and McGregor delivered the most profound singular blows, Poirier`s recent final bout against Max Holloway at UFC 318 served as a fresh testament to that very chin. Despite absorbing significant damage early in their five-round war, including a moment where his equilibrium was clearly compromised, “The Diamond” rallied, even scoring his own knockdown. This fight underscored his unparalleled ability to absorb punishment and continue fighting, a trait that has defined his illustrious career.
His 22-9 UFC record, punctuated by a string of elite victories, is built upon a foundation of taking incredible shots and dishing them out in return. From the legendary Max Holloway, whom he faced three times, to the formidable Khabib Nurmagomedov, Charles Oliveira, and Eddie Alvarez, Poirier has consistently faced the pinnacle of lightweight and featherweight talent, rarely taking the easy path.
The “What Ifs” of a Legendary Career
Every great career has its “what-ifs,” and Poirier`s is no exception. While his resume reads like a hall-of-fame induction list, featuring multiple-time champions and icons, there remain a handful of legendary names he never got to share the cage with. Figures like Donald “Cowboy” Cerrone and BJ Penn were on his wish list, fighters whose primes aligned with different phases of his career.
Perhaps most famously, a highly anticipated clash with Nate Diaz at UFC 230 in 2018 was derailed by injury, a fight that, despite fervent fan demand, was never re-booked. Similarly, negotiations for a bout with lightweight legend Tony Ferguson for UFC 254 in 2020 fell through. These unfulfilled matchups, while minor footnotes in an otherwise monumental career, add a touch of poignant reflection to his journey, reminding us that even the most accomplished fighters have unreached ambitions.
A Legacy of Durability and Grit
Dustin Poirier`s reflections on the hardest hits he`s taken are more than just a list; they are a stark reminder of the sheer physical demands and mental fortitude required to compete at the highest level of mixed martial arts. His career, defined by incredible wars and unwavering determination, cemented his status as one of the most respected and exciting fighters to ever grace the Octagon. As he steps away, “The Diamond” leaves behind a legacy not just of powerful offense, but of an unbreakable spirit that could absorb the very best the sport had to offer, and keep fighting.
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