Vietnamese Football After the 2026 ASEAN Championship Title: Tactics, Finance and Long-Term Risks

On 5 January 2026, at Rajamangala Stadium in Bangkok, the Vietnam men's national football team beat Thailand 3-2 in the second leg of the 2026 ASEAN Championship final, winning 5-3 on aggregate. It was Vietnam's third title in the regional competition, after 2026 and 2026. The trophy closed a run of more than seven months under head coach Kim Sang-sik, appointed by the Vietnam Football Federation in May 2026. The preceding context was far from favourable. In the second round of Asian qualification for the 2026 World Cup, Vietnam finished behind Iraq and Indonesia in Group F and were eliminated. Head coach Philippe Troussier left his post after a 0-3 defeat to Indonesia at My Dinh Stadium on 26 March 2026. The Southeast Asian title is therefore a rebuild that succeeded in terms of results, but not necessarily one that succeeded in terms of structure. Tactically, Vietnam under Kim Sang-sik operated flexibly between a back four and a back five. Against stronger opponents, the team shifted to a three-centre-back system, with two wing-backs covering the entire flank, creating a layered defensive block in front of the penalty area. Against weaker opponents, the team moved to a back four and added attacking players. That flexibility allowed Vietnam to control the tempo better, but it placed very high demands on the fitness and reading of the game of the midfield line. A notable feature was the mid-block press. Rather than pressing high continuously, Vietnam often dropped the block to the middle third, closed vertical passing lanes and waited for errors. This approach conserved energy in a congested calendar and exploited the speed of the attackers in transition. The limitation is that the team depends heavily on the quality of the final pass and struggles against opponents who willingly concede territory and defend in numbers. In terms of personnel, the arrival of Nguyen Xuan Son, a Brazil-born forward who obtained Vietnamese citizenship, added a profile Vietnamese football had lacked for years: tall, strong in the air and able to finish with both feet. In the first leg of the final at Viet Tri Stadium on 2 January 2026, Nguyen Xuan Son was the standout performer before suffering a serious injury and leaving the pitch. Alongside him, Nguyen Quang Hai, Nguyen Hoang Duc and Nguyen Tien Linh remained the spine of the team. Squad depth, however, remains a major question. When Nguyen Xuan Son was injured, the national team had almost no replacement of comparable physicality or playing style. In defence, the core centre-backs have reached the latter stage of their peak cycle, while the next options have not been tested in decisive matches. This is a systemic risk that a short training camp cannot resolve. Financially, professional football in Vietnam still depends heavily on sponsorship from parent companies and on broadcast rights. Ticketing, merchandise and digital services account for a small share of revenue at most V.League 1 clubs. Some clubs still delay wages and bonuses, which directly affects player morale and the credibility of the league. In the domestic transfer market, the notable trend is that financially strong clubs increasingly concentrate on signing high-quality domestic players and naturalised players rather than spreading investment across cheap foreign recruits. This widens the gap between the leading group and the rest and pushes up domestic transfer prices. Smaller clubs are forced to rely on their academies to remain competitive. V.League 1 currently has 14 clubs and has used VAR since the 2026-2026 season. Introducing VAR was an important step in refereeing governance, but it also exposed limitations in infrastructure, cost and operating staff. On the sporting side, the league still suffers from a congested calendar, uneven rest periods and inconsistent pitch quality in some localities. On the regulatory side, policy towards naturalised players and overseas Vietnamese players is much debated. The case of Nguyen Xuan Son shows that adding one high-quality naturalised player can directly change the attacking strength of the national team. If overused, however, such a policy can erode the motivation of young domestic players and create short-term dependency. Clear, transparent and consistent criteria are essential. In terms of results, the 2026 ASEAN Championship title produced a rare positive media cycle. Pressure on the coaching staff eased markedly, fan confidence was reinforced and the commercial appeal of the national team rose. Vietnamese football opinion, however, swings very quickly with short-term results. A few draws or defeats in subsequent competitions could fully reverse this mood. On governance, the Vietnam Football Federation faces a demand to shift from an administrative management model to a more professional one, including standardised club licensing criteria, financial transparency and reform of the youth competition system. In the dressing room, the generational handover between the 2026 golden generation and players born after 2026 is the key challenge. Integrating overseas Vietnamese and naturalised players also requires sensitive personnel management. On fitness and medical care, the workload of key players is a pressing issue. Many national team players also feature for their clubs in V.League 1, the National Cup and continental competitions, leading to prolonged overload. Nguyen Xuan Son's serious injury in the first leg of the final is clear evidence of this risk. Load management and recovery work need to be professionalised at both club and national team level. Vietnam's medium-term risk profile centres on four groups. The first is sporting risk, where squad quality does not keep pace with fan expectations. The second is financial risk, tied to dependence on a small number of sponsoring companies. The third is personnel risk, as key players pass their peak at the same time. The fourth is media risk, when expectations are pushed far above actual capability. In media terms, the narrative of Vietnam returning to the Southeast Asian throne has a solid factual base, because the 5-3 aggregate result is verifiable. Extending that narrative into Vietnam being ready to compete for a World Cup place, however, goes far beyond the available data. The gap between public expectation and actual capability is the source of most pressure on the coaching staff in recent cycles. At youth level, Vietnamese football has produced landmarks: the U23 team reached the final of the 2026 AFC U23 Championship in China, and the U20 team played at the 2026 U20 World Cup in South Korea. In the women's game, Vietnam qualified for the 2026 FIFA Women's World Cup in Australia and New Zealand for the first time. These milestones show potential, but the gap between isolated peak results and long-term stability remains wide. Socially, football remains the most widely followed sport in Vietnam. Attendance at some V.League 1 matches and at national team games remains high, generating significant ticketing revenue for some clubs. Fan culture, however, has not been converted into sustainable commercial value because of the lack of a professional ticketing system, licensed products and a long-term brand strategy. Along the industry chain, Vietnamese football is slowly moving from a model dependent on spontaneous talent towards one based on systematic investment. Academies such as Hoang Anh Gia Lai - JMG and the PVF Youth Football Training Centre play an important upstream role, supplying players to V.League 1 clubs. In the middle of the chain sits the domestic competition system, where operating quality determines commercial value. Downstream, the broadcast rights, sponsorship and digital services markets still offer considerable headroom that has not been exploited proportionately. In summary, 5 January 2026 is an important milestone, but it should not be read as the end of a cycle. The real value of the 2026 ASEAN Championship title lies in the room it creates for reform: standardised league governance, deeper investment in youth development, transparent club finances and healthy management of public expectations. Without those steps, sporting results will keep fluctuating by cycle, and Vietnamese football will remain a regional champion that has not yet broken through its continental ceiling.