MMA Champions Across Six Promotions: One Weight-Class Tier Offset and Seven Vacant Belts

On Tuesday I reopened my coded notebook after several days on the road, and two lines sat so close together that I read them twice. One line read: "Malykhin — ONE, light heavyweight — 225 lbs." The other: "UFC, light heavyweight — 205 lbs." Twenty pounds apart. Same division name, a full weight tier apart. Nobody mistyped the entry. It is a deliberate design.

The reference document in my hands lists current champions across six promotions — UFC, PFL, Bellator (now folded into the PFL ecosystem), ONE Championship, Rizin and Invicta FC — spanning men's heavyweight down to women's atomweight. More than twenty divisions, men and women, filled belts and vacant ones alike. When a document only lists, the job of the person reading the data is to ask what its structure is saying.

Among the six, UFC remains the centre of gravity. ONE anchors the Asia-Pacific. PFL, after absorbing Bellator, has assembled an unusually broad title portfolio with six men's divisions and one women's. Rizin holds the Japanese market with a more compact ladder. Invicta carries one category only: women. That distribution is not random; it mirrors the revenue ranking and broadcast-deal scale of each organisation.

I have kept the cross-checking habit since 2026, when I hand-recorded all 64 World Cup matches and found that 34 of 169 goals came from set pieces — 20.1 percent, rising to 12 of 38 in the knockout rounds, or 31.6 percent. I applied the same method to this MMA title table: every figure needs at least two sources before it enters the notebook. In 2026, when competitions froze, I spent eight months coding 242 SHB Da Nang matches from 2026 to 2026, interviewing 31 former players and collecting 47 old match reports. That habit did not change when I moved into covering mixed martial arts.

The first thing that strikes you when the divisions are laid side by side is that ONE's weight ladder sits exactly one tier heavier than UFC and PFL, and this is a long-standing structural feature rather than an error. ONE's light heavyweight is 225 lbs, UFC's is 205. ONE's middleweight is 205, UFC's is 185. ONE's welterweight is 185, UFC's is 170. ONE's lightweight is 170, UFC's is 155. ONE's featherweight is 155, UFC's is 145. ONE's bantamweight is 145, UFC's is 135. ONE's flyweight is 135, UFC's is 125. And so on down the entire table. A ONE middleweight champion moving to UFC would have to fight at light heavyweight. This is an institutional barrier to fighter mobility between promotions, not a trivial technical detail.

The second point: PFL is operating as a second-tier talent aggregator. Its title list reads more like a post-Bellator compilation than an internal development pipeline: Vadim Nemkov at heavyweight, Corey Anderson at light heavyweight, Usman Nurmagomedov at lightweight, Cris Cyborg at women's featherweight. Reading the names, I see the trace of an acquisition strategy rather than cultivation. That is not wrong commercially, but it raises a question the listing does not answer: do these belts represent competitive quality or portfolio strength?

The third point: seven belts are vacant, and five of them sit in women's and lighter divisions outside the UFC. The UFC heavyweight title is vacant. The UFC women's flyweight title is vacant. Rizin's light heavyweight title is vacant. Invicta has four vacant divisions. A vacant belt usually means injury, retirement, suspension, or simply slow matchmaking. The reference document states no cause, so any inference must stop at the level of hypothesis. What I can state with confidence: the vacancy density at Invicta is a signal, not noise.

Running alongside that is the dual-belt model. Anatoly Malykhin holds ONE's light heavyweight and middleweight titles at the same time. Christian Lee holds ONE's welterweight and lightweight titles simultaneously. ONE permits fighters to carry two belts at once as a marketing instrument, turning the champion-versus-champion format into a flagship product. UFC opens the door to that model far less often. It is a policy difference, and it produces a different number of headline events each year.

The fight ends, but the data does not.

What audiences usually get wrong sits in three places. First, treating identically named belts as equivalent. A ONE middleweight weighs 205 lbs; a UFC middleweight weighs 185. Standing two champions side by side on a scale without conversion is a category error, not a debate. Second, reading a vacant belt as a sign a promotion is broken. In MMA, a vacant belt is a normal transitional state. What is notable is the density: four vacant divisions at Invicta points to a matchmaking pace problem or roster attrition, not a single event. For a women-only promotion, failing to fill belts strips sponsor visibility and erodes credibility in its role as a feeder. Third, assuming champions across promotions share one competitive tier. PFL carries names that once fought in UFC and Bellator, but their competitive foundation differs. A PFL belt does not automatically translate into a UFC title shot.

Numbers do not lie; we simply have not asked them the right way. Here, the right question is: whom did this champion beat, where, and how long did it take? Without fight-level data, any inter-promotional comparison reduces to a structural analogy, and a structural analogy cannot predict results.

Before asking who wins, ask who keeps discipline. In an ecosystem with more than fifty men's belts spread across promotions, data discipline is the only thing keeping comparison from sliding into sentiment.

The next thing to watch does not sit in any single fight. It sits in three internal signals: whether PFL can convert a broad title portfolio into commensurate broadcast revenue; whether ONE keeps the dual-belt model as an annual product; and whether the vacant women's belts are filled before the season closes. This reference document will stay useful until someone updates it. Every season is a chapter, and I am only the one holding the bookmark.