UFC Codexery

UFC 112

Two belts, two upsets, one unforgettable night in Vegas.

UFC 112, headlined by B.J. Penn's stunning upset of Georges St-Pierre for the UFC Welterweight Championship, stands as one of the most electric two-title-fight cards in the organization's history. Staged at the MGM Grand Garden Arena in Las Vegas on March 7, 2010, the event delivered a shock to the MMA world when the underdog Penn dismantled the long-reigning 'Doctor' in the third round, while Rashad Evans captured the Light Heavyweight belt from Matt Serra in the co-main event. The night is remembered not just for the upsets but for the sheer density of championship action on a single card, a rarity in the UFC's early-pay-per-view era. For Penn, the victory capped a turbulent career and cemented his legacy as a fighter who could beat anyone on any given night. For the sport, it reminded fans that even the most dominant champions remain human.

Quick Facts

Date
March 7, 2010
Venue
MGM Grand Garden Arena, Las Vegas, Nevada
Title fights
2 (Welterweight, Light Heavyweight)

Lore & Background

Georges St-Pierre entered UFC 112 as the undisputed Welterweight king, a fighter whose technical mastery and composure had made him nearly untouchable since 2008. B.J. Penn, by contrast, was a fighter the fanbase loved for his unpredictability, his trash talk, and his ability to produce spectacular finishes. The narrative heading into the fight was simple: the system versus the anomaly. What Penn did in the third round—cutting off the canvas, landing a flurry of punches that sent GSP to the mat and allowed the referee to step in—remains one of the most visceral title changes in UFC history.

The image of Penn standing over the fallen champion, arms raised, became an instant icon. The co-main event carried its own weight. Rashad Evans, a former Olympic judoka turned MMA contender, had long been a fan-favorite for his grappling pedigree and unassuming demeanor. His TKO victory over Matt Serra, who had been a two-division champion and a mainstay on the card, gave Evans the Light Heavyweight title in a manner that felt both earned and quietly historic.

The fact that both title fights ended by TKO gave the night a brutal, decisive texture that pure decision results rarely achieve. In the broader arc of UFC history, UFC 112 sits at the intersection of the sport's maturation. By 2010, the organization had moved past its early scrappy identity and into a polished, globally broadcast product. Yet the core drama—champion versus challenger, expectation versus reality—remained the engine.

Penn's rise and fall in the weeks that followed (he lost the belt to Carlos Condit just months later) only deepened the bittersweet mythology of that night, making UFC 112 a moment frozen in time rather than a chapter in a longer story.

Reader's Guide

UFC 112 | March 7, 2010 | MGM Grand Garden Arena, Las Vegas, NV Headline: B.J. Penn def.

Two championship fights on a single card: Welterweight (Penn vs. GSP) and Light Heavyweight (Evans vs. Serra) — a rarity in the UFC's PPV lineup of that era. • Rashad Evans captured the Light Heavyweight belt via TKO, adding a second title change to a night defined by decisive, stoppage victories. • The event is a touchstone for fans who argue that the UFC's best stories come from the underdog beating the 'system' — Penn's career arc (rise, reign, fall) gives the result lasting narrative weight.

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