The rookie goalkeepers are ‘basket’ knowledge
3 of the 4 goalkeepers who are on the Vietnamese team are almost brand new faces. Those people are Tran Trung Kien (from HAGL Club), Nguyen Van Viet (SLNA) and Trinh Xuan Hoang (Thanh Hoa). The total number of caps of the national team of these 3 people is only … 1 time (belonging to goalkeeper Nguyen Van Viet, in a friendly match against Syria in October 2023, under Troussier).
Most of the goalkeepers of the Vietnamese team are now rookies

These goalkeepers are mostly young
The age of the aforementioned goalkeepers is also quite young, Nguyen Van Viet is 23 years old, Tran Trung Kien 22 years old and Trinh Xuan Hoang 25 years old. The only goalkeeper in the list of FIFA Days matches in March is relatively experienced at the national team level, Nguyen Dinh Trieu (34 years old, 9 caps wearing the Vietnamese team).
However, the competitive experience of the goalkeepers is probably not a big problem for those who are called to the Vietnamese team at this time, because in the hands of coach Kim Sang-Sik has a quality assistant goalkeeper, Mr. Lee Won-jae.
This is one of the best goalkeepers in the history of Korean football, with a total of 133 caps on the national team of Kim Chi country, who attended 4 World Cups (1994, 2002, 2006 and 2010). Mr. Lee Won-jae can bring his competition experience to the students in the Vietnamese team today.
Quality is enhanced specially
Experience is the way to move the goalkeepers, how to master the forbidden area of the home team, as well as how to handle some specific situations, so that the safest way. For example, goalkeeper Nguyen Dinh Trieu is disadvantaged in terms of bodybuilding (only 1.80 m high, modest height for the goalkeepers of modern football), should not try to catch the ball in the situation of the ball dispute, but just turn on the ball to the ball as far as the goal player, as far as the opponent’s attacker as possible.

They will be guided by goalkeeper Lee Won-jae (left)
In the AFF Cup 2024, Nguyen Dinh Trieu applies this from the convey of assistant coach Lee Won-jae, before he progressed compared to himself, then won the best goalkeeper title in the Southeast Asian football championship. The same thing can be applied to goalkeeper Nguyen Van Viet (1.81 m), the character may be the same as Nguyen Dinh Trieu.
As for the goalkeepers who can be good as Trinh Xuan Hoang (1.84 m) and Tran Trung Kien (1.91 m), goalkeeper coach Lee Won-jae will show them how to take advantage of their bodybuilding, not only in the ball phase, but also in the face-to-face phase with the opponent, making the opponent terrified.
While playing at the top, Mr. Lee Won-Jae was famous as the goalkeeper capable of fighting with the opponent striker very well. The cold face of this goalkeeper always made the opponent’s strikers lose confidence, when they led the ball to invade the penalty area of the Korean team and discovered goalkeeper Lee Won-jae then rushed out very quickly.
For ordinary people, they may not see each strong point of each goalkeeper. But for Mr. Lee Won-jae, his professional eyes could detect the potential advantages in the goalkeepers he directly trained, before he could help these goalkeepers maximize the above advantages.
Therefore, the super good assistant of coach Kim Sang-Sik will help the Vietnamese team feel more secure in the position of the person who keeps the goal. Mr. Kim kept calling rookie goalkeepers on the national team, “upgrading” these goalkeepers, had assistant coach Lee Won-jae to take care of!