Nguyen Van Vi's Injury Forces Kim Sang-sik to Choose Between Safety and Jason Quang Vinh's Attacking Push

Nguyen Van Vi opened the scoring in Vietnam's 3-0 win over Indonesia, but the night ended early for the defender after he left the pitch with an injury. Nam Dinh coach Vu Hong Viet has confirmed the injury, though the national team have not yet disclosed the full medical details. This is not just a fitness problem. It changes the way Kim Sang-sik's side plan their left-flank attacks for the decisive stages of FIFA ASEAN Cup 2026. Van Vi was Vietnam's first-choice left-back. He regularly moved inside to support midfield and arrived late in the box to finish chances. His replacement Phan Tuan Tai is a committed defender but less mobile when asked to push high. The left side became noticeably less dangerous after that substitution. Jason Quang Vinh, who plays for Cong An Hanoi, is the most obvious alternative. He has pace, energy and an aggressive style. Yet his appearances for the national team have not matched his strong club form. This is typical for a player who has to adapt to a different tactical role and higher emotional pressure. From my long experience following Vietnam's matches, I believe the real issue is not simply choosing a left-back. The team must decide how much offensive power they need from that side. If Tuan Tai starts, the team may look safer but could be pinned back. If Jason starts, Vietnam can press higher but will need more cover from midfield. This injury may even force Vietnam to play with more balance. Van Vi's forward runs often left the left central defender exposed. A more defensive replacement could help the team control the game in a different way. But the risk is losing attacking variety in high-pressure matches. Kim Sang-sik now faces a decision that reveals his coaching philosophy. The Vietnamese team do not need to panic. They need a clear plan that fits the remaining players. The next training session will matter more than any outside speculation. Whoever replaces Van Vi must understand the role and be supported by the whole structure.