Leicester City boss Nigel Pearson said Wes Morgan can justifiably feel hard done by at Portman Road on Saturday.
Two 'unsavoury' incidents contributed to a mistake from his skipper, which cost his team a point.
Morgan appeared to lose his composure after receiving an elbow from Daryl Murphy and he was booked for protesting against the challenge by referee Darren Deadman.
A few minutes later, he lost possession and the hosts broke to score the winner through David McGoldrick.
Pearson offered no excuses for his side's third defeat in their last five games, but said the Murphy challenge and an off-the-ball kick from Michael Chopra contributed to Morgan's mistake.
"We weren't at our best but we still had enough chances to get something out of the game," he said. "But there were other incidents that had an effect on the result," he said.
"Do you not think the incidents off the ball contributed to him losing his composure? As far as I concerned, my captain has been fantastic for me this year.
"I am not a sour grapes person and I don't want to look for excuses but they were unsavoury incidents off the ball which have contributed to what happened.
"The officials have a difficult job. But I have seen his position and it is appropriate for people to ask the right questions.
"He got booked for complaining about someone elbowing him in the face. Chopra kicked him off the ball just prior to that.
"It is unfortunate I am talking about things like that instead of football. The officials have the job to do and I have seen the incidents again and I can understand Wes feeling hard done to.
"It is the authorities' job to look at those again. It is not my remit."
Pearson admitted that his side were again guilty of wasting great opportunities to score. Harry Kane missed two glit-edged chances, particularly in the second half when he was one-on-one with goalkeeper Stephen Henderson.
"We have had our chances and not taken them," he said. "It is a disappointing result for us. We could have been 2-0 up, but we weren't.
"I don't think we deserved to lose the game but credit to Ipswich. They are working very hard and Mick (McCarthy) has got them well organised and they are a lot more difficult to beat now than when he arrived.
"I am disappointed and the players are disappointed.
"We have played better and we have played worse, but ultimately it is about taking your chances and we have not done that ."
