Blackburn Rovers boss Tony Mowbray says some of the refereeing decisions in their 3-3 FA Cup second round draw against Crewe were "dubious".
Mowbray's side were 3-0 up within 20 minutes but had two players sent off as Crewe fought back to force a replay.
Rekeem Harper saw red for bringing down Chris Porter while Elliott Bennett was sent off for a clash with Perry Ng.
"The referee had a tough day but I don't want to criticise him. He had lots of things on his case," he said.
Speaking to BBC Radio Lancashire, Mowbray continued: "It just seemed today there were a lot of decisions and some that were really dubious."
Blackburn, who went into the game against Crewe off the back of four straight wins in League One, will now play a replay against the Railwaymen in the week beginning 11 December.
"I'm just interested to know whether they go home and go through it with the assessors and what was right and wrong," Mowbray added.
"Is it a learning exercise for those guys as well? We have to live and die by the rules as footballers and managers and that's why we hope every weekend they get more right than wrong.
"The result is 3-3 and we both get another bite of the cherry and we'll get on with it."