Vietnam U23 and the pressing puzzle: When data doesn't tell the whole story

In the 2026 ASEAN U23 Championship final in Jakarta, Vietnam U23 lost 1-2 to Thailand U23 despite dominant possession (62%) and an impressive PPDA index (8.9 – allowing only 8.9 passes per defensive action). These numbers, if read hastily, would lead many to believe the team was dominant and merely unlucky. But I, with 15 years of following Southeast Asian football and having worked as a data analyst for Danish television, see a different story: Vietnam's pressing was 'illusory' pressure that did not create real chaos in Thailand's defensive system. I began rewatching the match footage from minute 1 to 90. The first thing I noticed: Vietnamese players pressed in isolated clusters, lacking coordination between midfield and defense. When Thailand switched the ball to the left flank, center-back Nguyen Thanh Binh was often pulled out of position, leaving vast spaces behind. The high PPDA – meaning few opponent passes were interrupted – indicated ineffective pressing, but the root cause was a lack of tactical synchrony. Look at the xG (expected goals) numbers. Vietnam U23 had 1.8 xG, while Thailand had only 0.7. Yet the score was 1-2. This reflects a reality: Vietnam's chances came from set pieces or long-range shots, while Thailand created more dangerous opportunities inside the box. Detailed data show that 60% of Vietnam's shots came from outside the 18-yard box, whereas Thailand had 4 of 5 shots on target inside the box. This is not a matter of luck, but a consequence of disorganized pressing leading to defensive imbalance. I once made a similar mistake analyzing the Denmark-France match at the 2026 World Cup. I wrote an article claiming the Danish team pressed 'chaotically' because their PPDA was only 7.9, and was criticized live on air by a former player for not watching the film. From that I learned that data tells only half the story. With Vietnam U23, the full story is: fierce pressing but lacking intelligence, leaving the defense vulnerable to Thailand's quick through balls. We need to consider the tactical culture context. In Southeast Asia, high pressing is often seen as a symbol of modernity. But Japan and Denmark – two football cultures I understand well – taught me that effective pressing requires collective discipline and individual reading of situations. Vietnam U23 possess good physicality but lack finesse in timing offside traps and covering for each other. Another blind spot: data cannot measure the heart, but it points to where the heart is beating. In this match, Vietnam's heart beat at high intensity in the first half, but dropped noticeably after the second goal. The average running speed of midfielders decreased from 12.4 km/h in the first 30 minutes to 10.1 km/h in the last 20 minutes. This is a signal of tactical and mental fatigue. I do not believe in luck; I believe in what luck hides. Here, luck hides the truth that Vietnam U23 needs a revolution in pressing philosophy: not pressing at all costs, but choosing the right moments and maintaining structural shape. Otherwise, pretty numbers will remain mere illusions. To conclude, the lesson from this final is: numbers only tell the past, but football lives in the future. Vietnam U23 has potential, but they need a guide who understands that pressing is not about running more, but about running smart. And as an observer, I hope next time I look at PPDA, I will see not just numbers, but the heart of young players learning to control their own rhythm.