Mark Hughes has acknowledged Djibril Cisse deserved his sending off but claims it denied QPR three points against Wolves.
QPR were leading when Cisse saw red but went on to lose the game 2-1 after a second-half comeback from Wolves at Loftus Road.
And Hughes feels the incident in which Cisse retaliated to an ugly challenge from Roger Johnson was the key moment in the game.
"Obviously the red card has hurt us," admitted Hughes. "Djibril (Cisse) has held his hands up.
"In his defence, he has had a couple of broken legs in his career and I didn't think the tackle was great but you can't raise your hands.
"The initial movement was not a sending off but he's then raised his hand to his neck which is obviously what Mark Clattenburg deemed to be a red card."
The QPR boss maintains his side were heading for victory up until Cisse's moment of madness and was pleased with the response of his players.
"At that point we were in no danger and were winning comfortably," he added.
"Unfortunately we conceded immediately in the second half which was not what we were looking for.
"They've scored two but apart from that they've not created a great deal.
"We were still a threat and Adel (Taarabt) was excellent. Bobby (Zamora) was a threat too until his calves seized up."
The defeat sees Wolves move level on points with QPR with both teams just one point clear of the relegation zone.