Seven pillars return, eight new faces called up: Kim Sang-sik rebuilds Vietnam through fanless training sessions

The training session took place on pitch No. 3 of the youth football training center at 7 AM, with no spectators in the stands. The sound of boots on wet grass echoed evenly as the midfielders ran a one-touch combination drill. In a stadium without fans, I can hear boots on grass more clearly than the referee's whistle. That morning, coach Kim Sang-sik stopped the drill three times to correct Vu Van Thanh's position when joining the attack. He did not shout; he stepped onto the pitch, pointed at the space on the right flank, and asked for a repeat. On the third attempt, Thanh ran the correct line, but the pace still did not satisfy him. The context is the 2027 Asian Cup qualifiers, a goal announced by the Vietnam Football Federation in mid-2026. After the quarter-final run at the 2026 Asian Cup and the 2026 AFF Championship title, expectations for the new generation are higher than ever. But the journey to secure a continental ticket is not decided by ambition alone. It depends on small decisions in the dressing room, long injury layoffs, and squad rotation amid a congested fixture schedule. Eight group-stage matches will stretch from March 2026 to June 2027, and each one marks a turning point for the entire cycle. On February 10, 2026, the VFF announced a list of 28 players for matches against Myanmar and Thailand. The notable point was not the brand-new names, but the return of seven key players who had been absent for six months. Nguyen Quang Hai, Do Hung Dung, Nguyen Tien Linh, Vu Van Thanh, Doan Van Hau, Nguyen Hoang Duc, and Pham Tuan Hai all overcame long-term injuries. Joining them were eight first-time call-ups, mainly from the U23 squad that won the SEA Games gold medal in 2026. This return raises questions about the philosophy Kim Sang-sik is pursuing. Throughout 2026, he prioritized young players such as Tran Bao Toan, Nguyen Thai Son, and Bui Vi Hao. This generation brings new energy but lacks international experience. Friendly defeats against Iraq and the UAE showed that the gap between enthusiasm and composure remains too wide. In the dressing room, the truth outlives any contract – and the truth here is that the veterans remain the only anchor for the possession-based style he wants to build. GPS data from 2026 shows Vietnam averaged 58% possession against weaker teams, but the figure dropped to 47% against teams of similar level. This reflects both the rawness of their pressing and the absence of a calm conductor in midfield. Do Hung Dung, at 32, is still the only player who can read the rhythm and change the speed of ball circulation. His return gives the younger midfielders the freedom to push forward. Nguyen Hoang Duc, with his physique and ability to escape pressure, has been dropped deeper alongside Dung. The midfield duo is no longer two runners side by side, but a brain and a shield. The story does not stop at the seven names above. The eight newcomers are first-time call-ups, but pundits call them "familiar strangers" – players who wore youth team shirts but never had the chance at senior level. Kim Sang-sik does not see them as short-term fixes. In a closed conversation with the coaching staff I attended, he said it takes at least a 24-month cycle to properly evaluate a young player. Writing from a hospital bed, I learned that the rhythm of a match never waits for anyone. But for the newcomers, that rhythm must be slowed down so they can adapt. Kim also asked every newcomer to have a mentor for the first three months, a process usually seen in football academies, rarely in a national team. There is a common misunderstanding that recalling seven veterans is a step backward, a denial of the youth movement. This view ignores the fact that collapse does not come from one conceded goal, but from hundreds of small details being ignored. The smallest detail here is the timing of training. Instead of a squad revolution, Kim's strategy is a clever recycling – the veterans act as the skeleton, and the newcomers are inserted into specific positions. This approach does not create media shocks, but it builds a group that can correct itself without crude intervention from the bench. On the training pitch, the 3-4-3 formation Kim is building has a clear defensive variation. The midfield no longer chases the ball but covers for the two wide center-backs. That tactical demand needs the intelligence of Doan Van Hau at left center-back, who excelled at the 2026 AFF Championship. The seven veterans are not there for their names; they belong to a tested system. Nguyen Quang Hai no longer plays as a pure attacking midfielder as he does at Cong An Ha Noi; Kim has dropped him to partner Do Hung Dung in the center. The new role helps Hai use his ability to transition from defense to attack, but it requires him to sacrifice part of his goal-scoring output. Detailed analysis of Vietnam's twenty matches over the past two years shows that most goals came from regains immediately after opponents misplayed the ball in their own third. At the 2026 Asian Cup, Vietnam scored two goals from counters, one from a set piece, and none from organized attacking play. The return of Nguyen Tien Linh, a center forward who can hold up the ball and link play, means the team no longer relies on long balls over the top. But the problem remains against low blocks: Vietnam scored only 3 goals in 5 matches against teams that parked a defensive line in midfield. Chances created from the central zone were significantly lower than comparable teams. This is the puzzle the eight newcomers must solve, because they have the pace and dribbling ability the older players lack. Another important detail the media rarely mentions: in tactical sessions, Kim often holds a board and goes over every situation using PPDA, or passes allowed per defensive action. Vietnam's data in the 2026 World Cup qualifiers stands at an average of 11.2, higher than the optimal 9.0 the coaching staff set. From my perspective, this number does not reflect laziness but a lack of coordination between lines. When Doan Van Hau pushes high, the space behind him becomes a dead zone; when Pham Tuan Hai drops deep, the midfield becomes crowded but no one dares to sprint. The return of the seven veterans reduces this imbalance, but the truth is they are all over 27, and injuries have left marks on every step. In the dressing room after the session, I witnessed a conversation between Do Hung Dung and 20-year-old Tran Bao Toan. Dung pointed at Toan's boots and said: "Do not change boots mid-match before checking the pitch." That was not a technical tip; it was a lesson in preparation. Toan had scored in an internal friendly earlier, but then lost the ball in a simple situation because he chose the wrong contact point. The difference between a newcomer and a veteran is not skill, but the habit of handling details. Vu Van Thanh sat in the corner, tape wrapped around a blistered toe. He did not complain, only asked the doctor about recovery time for the Myanmar match. Among those details, I realized the team now has two layers of players: one that has reached its physical ceiling, and one that is not yet strong enough to carry the team. The lesson from my hospital bed in 2026 taught me that a team is like an emergency room shift: those who prepare better will not be dragged into the vortex. Kim Sang-sik seems to apply the same logic. He put the entire staff into a weekly physical assessment routine using GPS, heart rate monitors, and blood tests. The data is not for discarding players, but for catching early signs of overload. When a player reaches 85% of maximum capacity, Kim lets him sit out the next session. That is a cultural change: previously, resting was seen as a sign of weakness. Now, resting is part of the plan. Calling up seven veterans cannot be seen as a safe decision. Looking at the data, all seven have played at least 20% fewer minutes than the previous season at their clubs. Nguyen Quang Hai made 18 appearances for Cong An Ha Noi; Doan Van Hau played 15 – still low due to injury. In contrast, the eight newcomers have all played more than 25 league matches. Physically, the newcomers are superior. Tactically, the veterans remain ahead. But that edge only exists if they are given the right roles. If Kim uses Quang Hai as a winger, he will fail. If he uses him as a deep-lying number 8, the system will work. Finance is another angle even if no one mentions it publicly. Calling up seven veterans from big clubs such as Cong An Ha Noi, Becamex Binh Duong or Thep Xanh Nam Dinh comes with national-team compensation obligations. But the eight newcomers come from smaller clubs, where they play regularly because of merit, not sponsorship contracts. In V-League, the real value of young players is often distorted by sponsorship deals. A fringe newcomer earning 30 million VND a month can be priced at eight figures. Kim told his assistant he does not care about the fee; he cares about the man on the pitch and the data he produces. The dressing room is where the truth outlives any contract. And in the dressing room that morning, I overheard a small argument between Do Hung Dung and Nguyen Thai Son about covering for each other against central counter-attacks. They talked about positioning, and that is the most valuable conversation. Watching the final three training sessions before the squad was locked, I noticed Kim's favorite drill was a 4-2-3-1 shape that morphed into 3-4-3 in possession. Through that drill, Dung and Hoang Duc took turns dropping alongside the center-backs to build play. But the rhythm slowed whenever the full-backs hesitated to push high, fearing the space behind. Kim then ordered six minutes of counter-pressing, with a rule that each player could touch the ball at most twice before passing. By the third period, misplaced passes dropped from 14 to 5. That is football that does not need spectators to be seen, as long as the observer stands in the right place. How many points Vietnam takes from Myanmar and Thailand matters. What matters more is whether the eight newcomers have the patience to wait for their roles in a two-year cycle, and whether the veterans can sustain their form through a three-games-per-month pace in 2026. A match without cheering still tells more than a loud season. The most important coaching decision will come when the team faces a defeat, not when the score is comfortable. And before the ball rolls at My Dinh on March 25, all the staff can do is repeat the small details until they are boring – because a team's rhythm never comes from improvisation, but from hundreds of repetitions that make everyone stop thinking.