In MMA, a great chin is the most underrated stat there is. You can have the fastest hands or the slickest takedowns in the division, but if you cannot take a shot, none of it matters past the first clean counter. "Chin" — a fighter's ability to absorb a strike and keep fighting — is what separates the highlight-reel knockouts from the gritty come-from-behind wins.
Our fight engine rates every UFC fighter's durability on a 0–100 scale, weighing how well they recover, how rarely they get finished, and how they hold up deep into a fight. Here are the 10 toughest chins in the UFC right now, by the numbers — the fighters you simply cannot count out.
The 10 toughest chins in the UFC
#1 Nate Diaz Welterweight ·
Diaz simply does not break. An elite chin lets them eat a clean shot, reset, and keep walking you down behind their cardio.
#2 Marlon Vera Bantamweight · #10
Vera turns would-be knockouts into just another exchange — and with power and cardio on top, slowing them down is the hard part.
#3 Fedor Emelianenko Heavyweight ·
Granite. Emelianenko's jaw has flipped more than one "he's done" moment into a comeback, especially with that cardio to fall back on.
#4 Jon Jones Heavyweight ·
You can land flush on Jones and still be in a fight. That durability, paired with fight IQ, is why they are so dangerous in deep water.
#5 Tony Ferguson Lightweight ·
A world-class chin is the foundation of Ferguson's whole style: it buys the time for their cardio and power to take over a fight.
#6 Nick Diaz Welterweight ·
Few fighters carry their chin like Diaz. That kind of durability means the only reliable way to beat them is on the cards, not with a finish.
#7 Max Holloway Lightweight · #4
Holloway simply does not break. An elite chin lets them eat a clean shot, reset, and keep walking you down behind their cardio.
#8 Jon Jones Light Heavyweight ·
Jones turns would-be knockouts into just another exchange — and with wrestling and cardio on top, slowing them down is the hard part.
#9 Khabib Nurmagomedov Lightweight ·
Granite. Nurmagomedov's jaw has flipped more than one "he's done" moment into a comeback, especially with that wrestling to fall back on.
#10 Kayla Harrison Women's Bantamweight · Champion
You can land flush on Harrison and still be in a fight. That durability, paired with fight IQ, is why they are so dangerous in deep water.
Why durability wins fights
Durability does more than keep you conscious — it changes how you are allowed to fight. A fighter who trusts their chin can press forward, walk through a jab to land their own power, and stay aggressive in the championship rounds. That is exactly why our UFC fight simulator weighs chin and cardio together as a "durability" group: a granite jaw with no gas tank fades, and a deep gas tank with a suspect chin gets caught.
Want to see it play out? Put two of these iron-jawed fighters against a knockout artist in the simulator and watch how often durability drags a fight into the later rounds — then see who has the engine to win them. You can also build your own indestructible fighter in Build a UFC Fighter and run them through the gauntlet.