Cardiff manager Dave Jones bemoaned his side's inability to convert their chances after they drew 1-1 with fellow play-off hopefuls Sheffield United.
The Bluebirds controlled the game for long periods but they could not capitalise on their many opportunities and dropped two points, with Stephen Quinn's second-half goal cancelling out Jay Bothroyd's stunning opener.
"Chances were there to win the game and it was one-way traffic for most of the match as we battered them but one mistake has cost us," Jones said.
"It was a fantastic goal by Jay but one is not enough, certainly against a big side like Sheffield United and they scored with their only chance."
He added: "I don't think the referee helped us at all as they kept stopping the flow of the game with fouls and he did little about it. I cannot appeal against Jay's yellow card and now we have to do without him for two matches.
"Referees must be strong but unfortunately he has allowed them to get away with far too much."
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