Quique Sánchez Flores was incensed as Espanyol had to settle for a 0-0 draw with Levante after having a seemingly legitimate goal ruled out.
Gerard Moreno scored on a superb header in the 81st minute, but the referee disallowed the goal for a foul.
After the match, an angry Sánchez Flores struggled to contain his emotions.
He said: "I'd rather not talk about the goal; you will value it already. It was a jar of cold water. We thought we had gotten ahead of it after deserving it.
"We did a game in which we looked for the goal, but we missed correctly. It is a result that we do not like, but leaves positive details."
He added: "We had many centers to the area and relatively simple shots that did not want to enter. We dominated the game and things would have changed from putting us ahead."