Heyball, Snooker, 9-Ball: Three Rulebooks and One Misapplied Label

In May 2026 I sat in front of a screen in Liverpool and watched Zhao Xintong close out the World Snooker Championship final 18-12 against Mark Williams. After the last frame I wrote one line in my notebook: "18-12, four of the closing frames decided by safety." Three days later, in a snooker club in the city centre, a man of about sixty, cue still in hand, asked me a very simple question: "So is that kid the best cueist in the world?"

I asked him back: "Under which rulebook?"

He laughed, assuming I was dodging. It was the most complete answer I had. Nine years of note-taking began with pages counting running patterns on a football pitch; today those pages hold positional data from a billiard table. What I have learned is that most arguments in sport are not about the answer, but about two people using one word for two different things.

"Billiards" is a family label, not the name of a sport. Underneath it sit at least six distinct disciplines: snooker, American 9-ball, American 8-ball, Chinese 8-ball (heyball), three-cushion carom, and Russian pyramid. They differ in rules, in core technique, in tournament systems and in the commercial structure that funds them.

The differences are not cosmetic. A snooker table is 12 feet long with six tight pockets. A 9-ball table is 9 feet, pockets are wider, and the rules allow a single break to end the rack. A heyball table is a Chinese 8-ball table with rounded pocket jaws — where a well-struck ball can still rattle out if the contact angle is off by a few degrees. Three tables, three sports, three skill sets that barely convert into one another.

The data problem starts at the label layer, before anyone calculates anything. The snooker ranking list is run by the WPBSA and WST. The pool ranking list sits inside the WPA and Matchroom systems. Heyball runs a domestic tour with its own points structure. No conversion exists between those three systems, and none should. Yet every time a headline says "the world's best cueist," it merges three incompatible scales into one sentence.

A positional error is where reality signs its name. In snooker, a position missed by twenty centimetres can turn a winning frame into a losing one, because the long table and narrow pockets forgive no deviation. The same error in 9-ball usually does not end the rack — smaller table, wider pockets, and the player still has a route out. That does not make 9-ball easier than snooker. It means the two sports measure error in different units, and calling them by one name is the cheapest way to fool yourself.

The metric sets do not travel either. "Advancement" — a player's rate of progress through rounds — barely exists outside snooker. The century-break and 147-maximum framework only means something on a 12-foot table with fifteen reds. In 9-ball the measures are break-and-run and push-out. In heyball they are the win rate after group assignment and the number of racks closed out on the deciding black. Merge those three metric sets into one table and you produce beautiful, entirely meaningless correlations.

The commercial layer is even more separate. The winner of the World Snooker Championship takes £500,000, a figure held since 2026. It is the biggest cheque in snooker, but it belongs to one event, runs for seventeen days, and only one player touches it.

On the heyball side the structure is different. There are more events, more open qualifying, shorter formats, and the money comes from a large domestic market. A player ranked 40 to 60 in Britain — no Crucible spot, no major sponsorship — can earn better by taking a few flights to Asia. Labour in this sport flows toward the money, and that is a signal that arrives earlier than any ranking list.

The governance layer has no shared referee at all. No body holds authority across snooker, pool and heyball simultaneously. That became clearest in June 2026, when the WPBSA announced sanctions against ten Chinese players in a match-fixing case. Liang Wenbo and Li Hang received lifetime bans. Yan Bingtao received five years. Zhao Xintong received twenty months, expiring on 1 September 2026 — and nine months later he won the world title as an amateur, having already lost his professional tour card. No ranking system can encode that arc, because it ran through a judicial process, not a points process.

A cueist's value is usually a story the market repeats until it becomes a belief. Across two seasons the market's view of Zhao Xintong changed three times: young talent, banned player, world champion. His technique barely changed in that window. What changed was belief, and belief lives in no technical data framework. This is why I distrust player-valuation models built entirely on match statistics.

The generational axis shows the same damage. Ronnie O'Sullivan, John Higgins and Mark Williams were all born in 2026. O'Sullivan has seven world titles and forty-one ranking titles. Williams reached the 2026 final at fifty years old. That is a snooker story, not a 9-ball or heyball story. In those two branches the talent pipeline runs on a completely different rhythm, built on local club systems and domestic tours. Applying one word to all three pipelines leads readers to believe a generation is ending everywhere, when in fact it is ending in one branch only.

The industry's popular belief is that money will merge the branches. More money, more events, more players crossing over, and eventually one shared system. I don't see that in the data I track.

I see the opposite direction. Matchroom is expanding its pool events into Middle Eastern markets. Heyball events keep their money at home and grow on domestic audiences. WST holds the Crucible as an irreplaceable asset. Three ecosystems are separating, with three revenue sources, three audiences and three definitions of a good player.

When the match ends, data lies more subtly than any player. The most subtle lie starts before the numbers exist: a label applied wrongly at the collection layer. When someone tags an event "billiards" without establishing the rulebook, everything downstream — rankings, player valuation, form forecasts — inherits the error. The fault lies with whoever named the field, not with the model.

Tactics are not in the textbook; they live in the gap between two cushions. In billiards that gap appears where two branches touch: snooker players moving into heyball mid-career, pool players learning snooker-style safety play to survive long matches. Hybrid technique is genuinely born there. But it is born inside individuals, not at system level. And so it leaves no trace in any aggregated dataset.

Next season I will track one indicator: how many cueists appear in both a ranking snooker event and a heyball event within the same calendar year. If that number rises, the branches are beginning to bleed into each other. If it stays flat, the shared label remains a convenience of speech.

And before every headline about "the best cueist in the world," the first question I will ask is still the one from the man in Liverpool: under which rulebook?