Central Coast Mariners coach Lawrie McKinna said he was disappointed his side could not finish off the Pohang Steelers when they were 2-1 up.
The Mariners found themselves down 1-0 in the first half but bounced back to take the lead through an Adam Kwasnik double.
They then let the Korean side take over and deliver too punishing blows in the final 20 minutes.
The loss ended the Mariners Asian Champions League campaign in what ended up being a disappointing performance.
"We started off very poorly, gave away a penalty and gave Pohang plenty of chances in the first few minutes," said McKinna after the match.
"It took us a bit of time to get into the game and we were glad to come in only 1-0 down at half time.
"Once we scored our first goal, I believed that we were the better team and once we went up 2-1 I thought that we could extend that and go further in front.
"Again, we're very disappointed that we didn't get at least a point, particularly with the way the game was going in the second half where we felt that we could win the game."