Leicester Tigers boss Richard Cockerill revealed his frustration with both his players and the referee after Saturday's loss to Harlequins.
All of Leicester's points came courtesy of three penalties from England fly-half Toby Flood in the 22-9 defeat, leaving Cockerill to rue a number of missed chances.
"We lacked composure when we had opportunities, which is disappointing," said the Leicester coach
Leicester suffered no more than injured pride and Cockerill admitted his side had to improve after dropping more points following last week's draw at Saracens.
"We need to be better at taking those opportunities. There was a vital part in the second half when we had a run of line-outs which we cocked up.
"You will have to ask the head of the Elite Referee Department how many times they have to pull a maul down before you get a yellow card or a penalty try. And in the first five minutes we had a line break and they killed the ball and it's just a penalty.
"But they came and played and fair play to them. They ran hard and played well, they are a good side.
"I don't care who is missing though, we have to be better and more clinical."