Valencia coach Jose Bordalas insists Real Madrid's controversial penalty changed Sunday's game.
Los Che ended up losing 4-1 on the day.
Bordalas said: "I didn't see it clearly from the touchline but at halftime I was able to see it and it is not a penalty. It is a non-existent penalty. I understand that the referee might interpret that it is a penalty from his view on the pitch, but VAR is there a reason: To see that move and correct it, as has happened in many games.
"It is not a penalty, Alderete wins the duel with Casemiro. Casemiro hits him. He is clever, he lets himself go down, and the referee gives a penalty.
"I have already commented on the move. It was not a penalty. Real Madrid are a great team, and they got ahead just before the break and sent us into halftime 1-0 down. That hinders things, but it is not an excuse. I'm not happy.
"The team were very fragile and very vulnerable. The second goal was very easy for the opposition; there were many Valencia CF players around and incomprehensibly they got into the six yard box.
"The third came from a turnover, and when it was 3-1 we were pushing forward and Benzema is lethal in the area. We have to be smart in risky areas. We lost in a resounding way and we made things very easy for a result like tonight. I am not happy."