In a meeting between two sides who have lifted the trophy six times between them, the tie was balanced in terms of attempts and shots on target despite Singapore dominating possession.

Both sides had the ball in the back of the net in regulation time but the efforts were ruled out for offside.

The match, however, burst into life in added time at the end of the second half when substitute Shakir Hamzah was adjudged to have handled in the box after falling over.

Nguyen Tien Linh held his nerve to tuck his spot-kick home in the 11th minute of additional time and Nguyen Xuan Son then ensured Vietnam would go into the second leg with a healthy lead with his strike three minutes later.