Aberdeen manager Derek McInnes has rued the decision to send off keeper Jamie Langfield in his side's defeat against Celtic.
Langfield saw red for a challenge on Georgios Samaras at the end of the first half, with Kris Commons scoring from the resulting spot kick.
James Forrest added a second goal late on to secure the victory for Celtic but McInnes felt that his side missed a great opportunity to take something from the game.
"I'm disappointed it got to that situation because they hadn't really got behind us before that. Everything was in front of us," the Scottish Daily Record quotes him as saying.
"I thought there was more to come from us. But I don't think there was a lot in it, neither side had threatened with a glaring chance.
"As soon as we go down to 10 men it's difficult against a team like Celtic when they have something to hold on to."
The result leaves Aberdeen in fourth place in the Scottish Premier League.
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