A complaint to SANZAR from the Blues that rookie Super 14 referee Garratt Williamson was bullied during their game against the Waratahs by his two Australian assistant referees was to be discussed at a meeting on Tuesday.

The New Zealand Herald reports that SANZAR referees' boss Lyndon Bray was to discuss the grievances with the Blues coaching group, who are convinced their 39-32 defeat in Sydney was controlled by touchline advice from assistant referees Paul Marks and James Leckie.

While Blues head coach Pat Lam is still angry about the officating, he is adamant the officials had not cost his side the match.

"I want to make that really clear. That is not the reason why we lost the game but it is highlighting what is happening.

"This was the performance of the assistant referees with an inexperienced referee and I will leave that with Lyndon," Lam told the New Zealand Herald.

Lam pointed out that Marks had already been stood down from Super 14 refereeing after the Waratahs match with the Sharks on March 6, while Leckie had been dropped by the Australian Rugby Union.

The Blues coach said he listened to the officials' calls throughout the game and felt the assistants were controlling the game.

"Normally it would be white this, blue this, blue this, white this but the whole game, white offside, white hands on, white doing this. Not one call was made against blue," he claimed.

"Probably the disturbing thing was, and this is where the experience comes in, is the fact that every call was listened to bar one. I understand that, because there is a process and he has to trust that, but an experienced referee would have asked 'are there not any calls for blue'?"

According to the New Zealand Herald, Bray had reviewed the match and did not concur with Lam's views. He had not heard the influence claimed to have been exerted by the assistant referees but said he would discuss the issue with Williamson.

"All coaches are very committed to winning and I think Pat is very disappointed. He is also very level-headed and we will look at the facts together."

The Blues coach said it was easy to understand his players' frustrations when they saw different rulings for the same offences.

They just wanted consistency and felt the assistants were watching only one team.

On Saturday, experienced South African referee Craig Joubert, who has refereed 18 Test matches since his Test debut in 2005, will be in charge of the Blues game against the unbeaten Bulls, with Josh Noonan and Matt Stanish, both of New Zealand, as assistants.