Dong Nai topped Group D and won a final round berth at the National U.21 football contest after a 3-0 win over Binh Thuan at Nha Trang Stadium on Thursday.
Dong Nai has become the third team after Nghe An and Dong Tam Long An to qualify for the Thanh Nien-sponsored National U.21 football final round to be held in Gia Lai Province next month.
Before the game it was predicted that Dong Nai would have a tough match against Binh Thuan who were on a high after beating Becamex Binh Duong 4-3.
Also, Dong Nai players would feel "psychologically stiff" because they had to start the match against Binh Thuan before the game between hosts Khanh Hoa and Binh Phuoc, experts had said.
However, Dong Nai has proved to be the strongest team in the group, fully deserving its place in the final round this year.
Former national U19 team captain Nguyen Duc Nhan scored the opener, and he was followed by Hong Duong and Tuan Anh.
Group C hosts Binh Dinh took another stride towards the final round with a 1-1 tie against Dak Lak.