Inter Milan coach Simone Inzaghi was left angry after their 2-2 draw with Monza.
Matteo Darmian saw his opener immediately cancelled out by Patrick Ciurria, then Lautaro Martinez caught Pablo Mari napping inside the penalty area to restore the advantage until a stoppage-time Luca Caldirola header with decisive deflection off Denzel Dumfries.
Inzaghi said, “We are very angry, because clearly there was an error. After five years of VAR, a foul was given where two Monza players trip up on each other. Everyone knows to wait and see what happens.
“Along with Lautaro hitting the post, we would've been 3-1 up, but are instead talking about a draw that comes from a serious mistake.
“You always expect more, but right now it's difficult for me to analyse the game. At 3-1, we would've won. There is a lot of regret, as we knew Monza were well-organised, then we had problems with Calhanoglu and Barella that we hope is nothing too serious."
He added, "Now we have to keep going, aware we've got to work better, recover all our players at 100 per cent and not forget we were coming off important wins against Atalanta and Napoli. Monza played well, but at 3-1 it would've been over.
"Unfortunately, we dropped points at the start of the season and must now try to recover by taking it one game at a time. It's disappointing, because the points were within our reach tonight."