TERRY Brown was unahppy with his side's display as the Dons slumped to defeat at Sixfields.
Luke Guttridge's goal 10 minutes from time earned Northampton a vital victory and consigned AFC Wimbledon to their second successive loss.
And boss Brown hit out at his side's performance afterwards.
He said: “It was a disappointing game. It was scrappy and ugly, and we never got going in the first half.
“We came out in the second half invigorated and took the game to them. We had chances to score and if we put one of them I think we would've went on to win.
“But our decision making in the final third wasn't good enough.
“We didn't play our football and didn't keep the ball as we would've liked.”
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