The easiest way into MMA history isn't watching three decades of events in order — it's a short list of fights that each explain something about how the sport got to where it is now. Four fights cover most of it: how the UFC started, why it nearly disappeared and then didn't, when women entered the cage, and the moment a seemingly unbeatable record turned out not to mean what everyone assumed. Watched in that order, they work less like a highlight reel and more like a guided tour of the sport's turning points.

Start With the Fight That Explains Why Grappling Matters

UFC 1 took place on November 12, 1993, at the McNichols Sports Arena in Denver. It was an eight-man tournament built around almost no rules, created to answer a marketing question: which fighting style actually wins when styles are mixed together with no weight classes and barely any restrictions. The winner was Royce Gracie, a Brazilian jiu-jitsu practitioner who gave up a visible size advantage in every fight that night and won anyway by taking much bigger opponents to the ground and forcing them to submit.

That result is the reason grappling is treated as a foundational skill in MMA rather than a specialty some fighters happen to have. Watching it now is also a reminder of how different the sport used to look: no gloves, no judges, no rounds. For more on exactly how unregulated that first event actually was, see what "no rules" really meant at UFC 1.

The Fight That Kept the Sport Alive

By the mid-2000s, the UFC was regulated but still not a profitable business. In April 2005, a reality show called The Ultimate Fighter aired its first season finale on Spike TV, built around fighters competing for a UFC contract. The main event, Forrest Griffin against Stephan Bonnar, turned into a back-and-forth decision that went the full three rounds, with Griffin winning a unanimous verdict.

That fight is widely credited as the moment the UFC's television audience became big enough to sustain the company — it led to a wave of new cable deals and a far higher public profile in the years that followed. It's worth watching specifically because nothing about it looks spectacular by modern production standards; what made it matter was simply that it was a genuinely great fight on live television at the exact moment the promotion needed one. The fuller version of this turnaround, including what came before and after it, is covered in a short history of the UFC.

The Fight That Opened the Door for Women in the Cage

For its first two decades, the UFC had no women's divisions at all. That changed on February 23, 2013, at UFC 157, when Ronda Rousey defended the newly created women's bantamweight title against Liz Carmouche in the first-ever women's fight in UFC history. Rousey won by armbar submission in the first round, in a fight that was closer than the result suggests — Carmouche briefly had her back and looked for a choke of her own before Rousey reversed the pressure.

Watching it now is a useful check on how recent an addition women's MMA actually is to the UFC's roster, and how much the division grew from that single fight. For the fuller arc of how women's divisions expanded afterward, see a brief history of women's UFC.

The Upset That Reset Expectations

Rousey went on to become one of the sport's biggest stars and ran up a string of dominant, mostly undefeated title defenses. Then, on November 14, 2015, at UFC 193 in Melbourne, Holly Holm knocked her out with a head kick followed by ground strikes, 59 seconds into the second round, to take the women's bantamweight title. It remains one of the most-cited upsets in the sport's history, precisely because Rousey's record going in looked less like "favorite" and more like "unbeatable."

It's a useful fight to watch for a reason that has nothing to do with the knockout itself: it's a clean example of how a perfect record can create an expectation the record doesn't actually guarantee. A fighter who has never been tested in a given way — here, against real distance striking and kicks — can look unbeatable right up until they face it.

How to Actually Watch Them

All four of these fights are old enough that picture quality and presentation vary noticeably — early-1990s broadcasts look nothing like a modern production, and even the 2005 and 2013 fights look dated next to current UFC cards. That's normal and doesn't take anything away from understanding what happened; treat the older footage as a historical document rather than expecting current broadcast polish.

The Takeaway

None of these four fights need to be watched in a single sitting, and none of them require already knowing the sport's history to make sense — each one is really a self-contained story about a turning point. Start with whichever one sounds most interesting rather than forcing chronological order; the point of rewatching old fights isn't completeness, it's picking up the handful of moments that explain why the sport looks the way it does today.