A Night Without Data: Why a Volleyball Writer Must Know When to Stop

22:40, a March evening. I opened the statistical file for a match in Vietnam's National Volleyball Championship. It rendered exactly as Data Volley output should: full columns — player names, attack attempts, block points, service aces, perfect-pass rate. Every cell was empty.

The sender wrote one line: "Just write it from the feel of the match, it has to go up tomorrow morning."

I closed the file. A fully formatted analysis is not the same thing as an analysis with content. That is what I have to remind myself every season.

Missing data, or a missing route for the data?

Saying Vietnamese volleyball lacks data is wrong. Since Data Volley became the FIVB statistical standard, every match in the national championship, the VTV Cup or a SEA Games campaign is logged rally by rally: who passed, who attacked, which zone the attack went to, who blocked it, where the ball landed. The federation publishes part of it, coaching staffs hold part of it, and the largest share sits on the hard drives of the technical teams.

What is missing is the route that data takes to reach the writer. That flow has at least four break points: a camera in the wrong position, a coder entering the wrong rally code, a file never pushed to the server, or a source page built with JavaScript so that an automated extractor reads back a blank page. The common thread is that nobody loses data instantly — they simply fail to notice they have nothing.

The pandemic season of 2026 taught me how to cope. When every competition stopped in March, I sorted 432 injury cases from the previous five V.League seasons by position, by minute of the match, by grass type. The league restarted in September with 12 matches in 45 days; I projected a 28 percent rise in hamstring injuries. By season's end the figure matched reality 89 percent of the time. The dataset I built during the pandemic is still recording what they would rather not publish.

The 2026 World Cup taught me the opposite. In Moscow I held an official report that listed no injury for a centre-back, while internal documents said he was at 70 percent fitness. I chose to write about running intensity and temperature. The 2026 World Cup taught me that silence is also a form of data.

Nine empty cells and the price of filling them with feeling

When a volleyball data file comes back empty, what is missing is more than a few figures. An entire chain of reasoning loses its footing.

Without a lineup and a setter distribution pattern, nothing can be said about tactics. A team running quick combinations around the setter is a completely different animal from one funnelling balls to the opposite.

Without attack data, nothing can be said about attacking efficiency. This is where volleyball journalism slips most often. Attack success rate is attack points divided by total attempts. Attack efficiency subtracts attack errors and times blocked before dividing by total attempts. The two numbers can diverge sharply. A wing spiker at 45 percent success but only 25 percent efficiency is hitting out of bounds or getting stuffed far too often.

Without a perfect-pass rate, nothing can be said about the defensive system. The FIVB defines a perfect pass as a ball delivered to the exact spot that lets the setter run the entire attacking menu. Media usually labels any error-free pass a "good pass." One word, two meanings, two opposite conclusions.

Without blocks per set, without an ace-to-error ratio, without the libero's dig count, every remark about the block and the back court is just an impression.

A single win means something entirely different next to a SEA Games qualifier, a shot at the Olympics, or a VTV Cup group match. A single athlete at 22 and at 30 tells two different stories about a career curve. Without dates and competition names, every comparison is meaningless.

An athlete moving from one club to another needs an ITC issued by the federation; a one-week delay costs a stage. I have seen articles conclude "internal trouble" only because paperwork had not arrived.

The risk layer is even less predictable. Age, injury history, club plus national-team load, public pressure — every variable needs a name and a number. The team doctor says three weeks; I count the days down one by one — the difference lies in the number, not in the promise.

With no stated expectation, there is nothing against which to measure expectation against reality. And that is the most dangerous empty cell, because it does not sit in a stats table but in the reader's head.

Nine layers, nine empty cells. They can be filled with feeling. Numbers do not lie, but the people supplying them do. So do the people who fill empty cells with feeling.

What frightens me is not a wrong article

We usually fear the wrong article. I fear the article that is formally correct but hollow.

A document with full headings, full tables, full conclusions, neatly laid out, will be read as a genuine assessment. The reader has no way of knowing that beneath those lines not a single rally was ever counted. The risk is not a volleyball risk. The risk is that a product which looks complete makes an entire system believe the job is done.

Worse, an empty file that slips through is usually mislabelled. The system logs "low-value article" instead of "extraction failure." A low-value item nobody fixes. An extraction failure must be fixed. One phenomenon, two log entries, two fates.

Before trusting a diagnosis, look at who benefits from it. In this trade, the person who benefits from a hollow analysis is the one who needs a piece up before the first whistle. Injury is a fact. An injury announcement is a document that requires verification.

What remains after closing the file

That night I did not write. The next morning I made three calls: to the technical team, to the coder, and to a coach who once led that club. By the afternoon the data file was re-uploaded, complete. The piece ran eighteen hours late and there is nothing to regret.

At 60, I still open my notebook before every match — an old habit, but the data is always new. What I want to leave behind for the volleyball reporters who come after is not a set of figures, but the right to say: "I have nothing to write yet."