One Word, "Break", Three Different Billiards Disciplines: The Data Trap in Vietnamese Billiards Coverage

In March 2026, at a billiards club on Tran Phu Street in Nha Trang, I was handed a statistics sheet printed by the organisers of an amateur tournament. The first column read "Break 50+": 7. The second read "Century": 2. The third read "Break and run": 11. Three metrics sat side by side on the same line, under the same name, and not one box said whether the table was a 12 ft snooker table or a 9 ft pool table. The man next to me, an A-grade player in the city, looked at it and said: "So this guy is strong across the board." I said nothing. In my head I had already crossed out the entire sheet. The word "break" in billiards carries three different meanings, belonging to three different sports, played on three different tables, scored under three different systems. Combining them into one table does not produce information. It produces noise. Three disciplines running side by side under one roof In Vietnam, billiards is called by one name but operates as three separate sports. American-style pocket billiards — 8-ball, 9-ball and 10-ball pool — is played on a 9 ft table with 57.15 mm balls and wide pocket openings, the objective being to pot the object balls in a prescribed order. Three-cushion carom is played on a pocketless table with 61.5 mm balls and is scored by the number of complete three-cushion contacts. Snooker is played on a 12 ft table with 52.5 mm balls, scored ball by ball, with a maximum of 147 points in a single visit. Behind these three disciplines sit three independent governing systems: the World Professional Billiards and Snooker Association (WPBSA) together with World Snooker Tour (WST) for snooker; the World Pool-Billiard Association (WPA) for pool; and the Chinese Billiards and Snooker Association (CBSA) for Chinese 8-ball. Three ranking systems, three calendars, three prize-money structures, three rule books. In Vietnamese newspapers, all three are routinely merged into "billiards". When an editor needs a metric, they reach for whatever metric is at hand. That is where most of the errors I have encountered in twenty years of reading and writing about this sport begin. One word, three meanings, and metrics that cannot be compared In snooker, "break" means both the opening shot and a continuous visit. A "century break" is a visit of 100 points or more, and it exists only when a player pots reds and colours in succession without yielding the table. In pool, "break" means only the opening shot. "Break and run" means breaking and then clearing the table in the same visit. A break and run in 9-ball is worth nine balls, and there is no way to convert it into a snooker century, because snooker has no concept of clearing in order. In carom, there are no balls to pot. The unit of measurement is the "serie" — a run of consecutive points. A 15-point serie by Tran Quyet Chien on a three-cushion table and a century by Ronnie O'Sullivan on a snooker table are two events in two different sports, measured with two different rulers. And here is the detail most Vietnamese reports skip: the 147 does not exist outside snooker. It is composed of 15 reds (15 points), 15 blacks (105 points) and all six colours (27 points). No other pocket-billiards table carries 15 reds on its surface. When a report states that a player "set a record 147" at a pool event, that metric belongs to another sport, not to the pool table. The first televised 147 was made by Steve Davis in 2026 at the Lada Classic; Ronnie O'Sullivan holds the record for the most competitive 147s according to WPBSA statistics. Table geometry decides success rates I do not assess players through phrases like "good feel" or "inspired form". I assess them through the ratio between ball diameter and pocket opening, because that ratio sets the permitted margin of error on every shot. A 12 ft snooker table with 52.5 mm balls and corner pockets of roughly 86 mm creates a very narrow margin of error. A 9 ft pool table with 57.15 mm balls and wider pocket openings allows a considerably larger margin. The Chinese 8-ball table uses a 9 ft frame but pocket openings of about 85 mm with rounded jaws, compressing the margin of error back towards snooker levels. The consequence: a player who pots at 90 per cent on a pool table can drop to 75 per cent on a Chinese 8-ball table with no decline in technique whatsoever. "Potting success rate" is not one metric. It is three metrics wearing a single label. The same happens with safety metrics. In snooker, a safety is measured by the position of the object ball after the visit ends. In pool, the measure is whether the object ball still has a path to the pocket. In carom, the measure is the distance and angle between the two remaining object balls and the cue ball. Three definitions, three recording methods, and no software merges them validly. My verification experience Based on my experience tracking matches at amateur and professional events in the region, the most common error lies not in the metric but in the definition behind it. In 2026, at an open tournament in central Vietnam, I received a statistics sheet recording nine visits of 50-plus points for one player across four racks. It sounded remarkable. I reopened the video of those four racks and counted by hand. The player had only four visits above 50. The rest were visits where the recorder had accumulated the scores of both players within the same rack, because he was recording by rack rather than by visit. "Before you analyse a break shot, tell me which area of the table the cue ball is opening from." That line is not meant to make life difficult. It is the minimum test: if the person supplying the numbers cannot describe the opening position, then their metric has no traceable origin. I also keep a personal rule when reading data: a missing metric does not mean a risk is absent. When a tournament does not publish prize money, when a match has no statistics sheet, when a player has no ranking data, that gap must be recorded as "undetermined". Filling the gap with "no problem" is the fastest way to deceive yourself. The counter-view: tight pockets do not make the better player a certain winner A widespread belief in Vietnamese billiards clubs is that the Chinese 8-ball table has tight pockets, is harder, and therefore the better player will win for sure. My tracking data does not support that conclusion. An 85 mm pocket opening compresses the margin of error for both players. The success rate of both falls. When both success rates fall, the skill gap does not automatically widen; the variance of the outcome rises. In short formats — race to 5, race to 7 — the small number of racks gives the uncertainty factor more weight. That is why Chinese 8-ball events tend to produce champions from outside the seeded group more often than long-format snooker events, even though the Chinese table looks harsher to the eye. "A champion is not someone who is unbeaten; they are the one who errs less often under the same pressure." But pressure is produced by format structure, and format structure differs between disciplines. Comparing the result of a race-to-5 event with the result of a 19-frame match is an invalid comparison at the design stage. The larger blind spot lies elsewhere. Vietnam does not lack world-class players — Duong Quoc Hoang in pool, Tran Quyet Chien and Bao Phuong Vinh in carom are proof. What is missing is measurement infrastructure: trained recorders, metric definitions standardised per discipline, and a video cross-check process before publication. When measurement infrastructure is weak, data gaps are always filled with narrative. And narrative cannot be verified. "An analytical system is only trustworthy when I can find its hole." Three billiards disciplines, one shared name, one shared statistics sheet — that is a hole visible without opening the video. What writers and readers need "A diagram on paper is only the residue of every decision that already happened on the table." A statistics sheet is the same. It means something only when we know which table it was recorded on, with which ball diameter, over how many racks. Next time a billiards report offers an impressive metric, the first question is not "how strong is this player" but "which discipline does this metric belong to". If the writer cannot answer, the numbers are merely decorating a headline. And if three billiards disciplines continue to be read as one, what is lost is not the accuracy of a single article — it is the ability to judge a generation of players correctly.