Leicester Tigers director of rugby Richard Cockerill will voice his concerns to the Rugby Union's head of elite referee development, Ed Morrison, in the wake of Saturday's defeat against Gloucester.
Cockerill and the rest of the Tigers camp were left frustrated with the officiating in the 27-21 thriller, especially so with some of the decisions made in the final 20 minutes.
With a two-man advantage at one stage after both Jimmy Cowan and Rob Cook were sin-binned, Tigers felt there were several key incidents which stopped them making the most of their numerical and huge forward advantage.
In such a close game, they believed they were crucial calls.
"It was a great game of rugby, apart from the result," said Cockerill.
"We got back in the game after going behind and put them under huge pressure.
"But I don't know how many times you have to get penalised two metres from your goal-line before someone goes to the bin or people get penalised?
"That was frustrating. We will have to review that with Ed Morrison. We got that pressure and they pulled down maul after maul – but how many times do they do it before you get your reward?
"You have to be under the sticks.
"If you were killing the ball three times on the trot, you would have someone in the bin. If they were penalties at the scrum, you would be in the bin.
"There were other tough calls, too. Their scrum disintegrated twice but he (referee JP Doyle) just re-set it. That is frustrating.
"Then they kick the ball out of our scrum-half's hands and the ref admits he didn't see it and says 'sorry'. That was a massive point in the game.
"We will go through the right channels and feed that back – but that's no solace to us. We made mistakes too, and they played really well."
