VAR Diary: When a sports analysis file contains no data

At 2 a.m., I opened the analysis file sent by a colleague. Every column read N/A. No player name, no tournament, no serve statistics, no tactical context. I remembered the phrase I often use with VAR assistants in Hai Phong: “There are offside calls nobody sees, but the camera never blinks.” But that night, no camera was running. No whistle sounded. There was nothing to judge. In Vietnamese football, data is becoming part of the dressing room. Coaches want to know how many times the opponent pressed; assistants want to know how many metres a player covered; technical directors want reports on chance conversion. The regular season is dense, and clubs from V.League down are getting used to looking at spreadsheets. Therefore, an analysis file full of N/A is not simply a technical problem. It is a gap in responsibility. Based on my experience watching matches, an empty report is rarely the sign of a clean game. Usually it suggests a broken process: the data collector never arrived, cameras were placed at the wrong angle, or the writer had no time to verify sources. A situation may be controversial, but nobody has gathered enough evidence to say the final word. At that moment, an analyst must choose between inventing a narrative or admitting the limit of what can be known. I choose the second path. In the file I received, all nine analytical sections were marked N/A. There was no technical data, no form, no schedule, no injury risk, no media narrative. The information value rating stood at one star out of five in every category. The highest risk was not a dangerous tackle; it was the complete absence of input data. If this were a sports article, what would the reader get? Nothing. But I do not view that as failure. In the VAR room, there are times when I tell the referee: “I am not certain enough to intervene.” That sentence is not easy to hear, but it is honest. If I make the wrong decision based on fabricated data, the damage is greater than waiting two extra seconds. I once rewatched all 64 matches of the 2026 World Cup after I failed to spot Gerard Piqué’s handball in the penalty area. I know the urge to compensate by producing a plausible story. But a single millimetre can change a team’s fate; I have learned to live with that. What worries me is not the empty cells, but how the Vietnamese sports market is responding to data. Analytics companies are growing, yet many reports focus on running distance or pass percentage while ignoring the real rhythm of a match. A number can be accurate but become noise if placed at the wrong moment. Conversely, an N/A report does not lie. It exposes the boundary of knowledge. Fans think technology is the supreme judge, but the referee is the only person on the pitch not allowed to choose a side — and I stand behind them. The biggest mistake is not blowing the whistle; it is being afraid to own your whistle. In football media, articles without verifiable sources are shared faster than ever. A controversial incident is clipped into a short video, attached to an emotional caption, and becomes a “fact” before the referee can review the full angles. At that point, an analyst has two choices: follow the crowd or stop and say the data is incomplete. I choose to stop, even if it means my article contains no player names. Sometimes refusing to conclude is itself a conclusion. It reminds us that sports journalism is not a race to be first, but a process of verifying every frame. The question I want to leave for colleagues is not “Where is the data?” That can always be answered with a phone call. A better question is: do we have the courage to tell readers that we do not yet know? An empty report today can be the foundation of a stronger verification process tomorrow. I still believe in that, just as I believe the camera never blinks. But a camera only matters when someone turns it on, points it in the right direction, and is willing to look three times before leaving the room. My job is to remind people of the rest: the blind spots, the gaps, and what has not been recorded.