The Qantas Olyroos have been narrowly defeated 1-0 by DPR Korea in their opening match of the Four Nations International Tournament in Vietnam.

In extremely oppressive conditions, which saw the temperature over 30 degrees and 80% humidity, both teams shared possession for the opening 15 minutes of the match.

The only goal of the game came in the 16th minute after Scott Neville conceded a free kick just outside the box for a late tackle. The resulting free kick by Park Song Chol was placed over the Qantas Olyroos wall, shaved the left post and deflected into goal despite a valiant diving save by goalkeeper Andrew Redmayne.

Speaking after the match, Qantas Olyroos Head Coach Aurelio Vidmar was happy with the overall performance of his team, but disappointed by the lack of finishing.

"I thought it was a very good performance for our first game together," said Vidmar.

"The players executed the game plan very well after only being together for a short period.

"The disappointing part is that we had a lot of chances and we should have scored goals from these opportunities.

"But overall it was a pleasing performance with a lot of positives that we will take into our next match."

In the other match of the tournament, host nation Vietnam defeated Kuwait 3-0.

The Qantas Olyroos will meet Kuwait in their next match of the tournament on Wednesday evening, with their final match against Vietnam on Friday.