Jim McIntyre believes the officials cost Ross County a win at St Mirren.
The Staggies were 1-0 up when Michael Gardyne had a goal ruled out for offside, and the game eventually finished 2-2.
"We've just looked at it and it's definitely onside, it's a poor decision," manager McIntyre said.
"It's onside and at that stage we go 2-0 up - it's a crucial moment in a big match and unfortunately it went against us."
|"I thought we had the cutting edge, they had a bit more of the ball but our shape was good and we restricted them to very little"|
And he added: "Yeah, we do [feel like they should have won the match] and I think that moment would have been pivotal.
"We responded well to it, it would have been easy to let our heads go down both times we got pegged back but we kept fighting to the end and I think if any team was going to win it was going to be us."
Paul Quinn nodded the opener for County before Adam Drury replied. Graham Carey made it 2-1 for the visitors but Jeroen Tesselaar ensured the spoils were shared.
"I thought we had the cutting edge, they had a bit more of the ball but our shape was good and we restricted them to very little," McIntyre added.
"It's a better result for the away team but that's hard to take at this moment because we feel we did enough to maybe win the match. We just need to put that final touch on it and take the game."