Cardio wins championships. We graded all 293 fighters in our engine for stamina, then took the top of the list and checked it against what actually happens in the cage — five-round wars, short-notice fights, and the kind of relentless pace that drowns opponents in the championship rounds. These are the ten best gas tanks in the sport.
Cardio is a pace you can sustain, not a tank you empty
The word gets used as if it were one attribute. In practice a fighter needs three separate
things: the aerobic base to keep working in round five, the recovery to get something back
between rounds, and — most overlooked — the efficiency not to spend energy on movement that
achieves nothing. Fighters described as having "bad cardio" are often just wasteful.
The numbers that hint at it
There is no cardio statistic, but output that does not fall away is visible in the data.
Max Holloway landing 6.92 significant strikes per minute is a volume figure,
and the reason it means something is that he sustains it into championship rounds rather than
front-loading the first. Compare a fighter with a similar per-minute number whose output halves
after round two and the same statistic describes a completely different athlete.
The other side is what a fighter absorbs. Taking damage is exhausting in a way that throwing
is not, so a low strikes-absorbed figure often reads as good cardio when it is really good
defence — and the two compound. A fighter who is not being hit finishes rounds fresher than one
with a better aerobic base who is.
Who just missed
Merab Dvalishvili — arguably the best pure engine in the sport; the pace is
so relentless that it is easy to forget it is a skill. Belal Muhammad — never
visibly tired in a five-round fight. Arman Tsarukyan — the wrestling output
alone would drain most lightweights.
Why cardio decides more fights than power
Power ends fights early or not at all. Cardio decides everything after the first exchange
stops working, which is the majority of professional MMA — most fights go to the scorecards,
and most scorecards are decided by who was still throwing in the third. In our own engine
cardio is weighted into the later rounds specifically, so a fighter who wins the first two on
paper can lose a simulated five-round fight and it will not be a bug. Try it in the
simulator with a five-round setting.
1Merab Dvalishvili · Bantamweight
Gas tank: S+ (our engine)
The most relentless engine in the sport, full stop. Merab is the only fighter in UFC history past 100 career takedowns, and he piled up 18 in a single fight against Cory Sandhagen. In 2025 he became the first bantamweight ever to defend the belt three times in one calendar year — routinely looking fresher in round five than his opponents did in round one.
2Movsar Evloev · Featherweight
Gas tank: S+ (our engine)
Still perfect at 20-0 as a pro, largely because nobody has solved his motor. He smothers opponents under wave after wave of wrestling and pressure for fifteen minutes without ever dropping his output.
3Colby Covington · Welterweight
Gas tank: S+ (our engine)
Whatever you make of the act, the cardio is genuinely elite. Colby throws volume and chains takedowns at the same rate in the championship rounds as he does in round one, a pace that has broken several top welterweights.
4Demetrious Johnson · Flyweight
Gas tank: S+ (our engine)
“Mighty Mouse” set the UFC record with 11 straight title defenses and entered the Hall of Fame in 2026. He held a frantic, all-phases pace for twenty-five minutes that no flyweight could live with.
5Khabib Nurmagomedov · Lightweight
Gas tank: S+ (our engine)
Retired a perfect 29-0. His cardio was a weapon disguised as wrestling — the relentless mauling broke opponents mentally long before the final bell ever rang.
6Tony Ferguson · Lightweight
Gas tank: S+ (our engine)
At his peak, “El Cucuy” ran off a 12-fight win streak on the back of a famously bizarre conditioning routine and a pace that dragged everyone into deep, ugly water where he thrived.
7Max Holloway · Lightweight
Gas tank: S+ (our engine)
Volume is just cardio with a target. Holloway owns the UFC record for most significant strikes landed in history, and his output only climbs as the fight goes on — capped by his one-second-left knockout of Justin Gaethje at UFC 300.
8Nate Diaz · Welterweight
Gas tank: S+ (our engine)
A cardio cult hero who has never been finished by strikes. He routinely got stronger into the second and third rounds, never more famously than when he took the McGregor fight on short notice at UFC 196 and submitted him.
9Nick Diaz · Welterweight
Gas tank: S+ (our engine)
The original Stockton iron man. A triathlete-level engine who walked opponents down behind a wall of nonstop punches until they wilted.
10Michael Bisping · Middleweight
Gas tank: S+ (our engine)
A true workhorse who fought anyone, anywhere, on any notice, kept a high pace for his entire career, and eventually became middleweight champion — all with one good eye.
Settle it yourself
Think the list is wrong? Pick any two of these fighters and let our engine simulate the fight — free.
Open the Fight Simulator →