Atletico Madrid's Champions League dreams came crashing down on Tuesday night as Arsenal booked their spot in the final, but the Spanish giants left the pitch fuming over what they believe was a series of costly officiating mistakes. While the club's public statements remained measured, behind the scenes, frustration boiled over after three penalty appeals were waved away during the semi-final second leg.

The first flashpoint came when Riccardo Calafiori was accused of shoving Giuliano Simeone with both hands in the box, with little regard for the ball. The Argentine forward later posted the incident on Instagram without comment, but he was more vocal about a separate moment involving Arsenal defender Gabriel Magalhaes. "When I went to shoot, I was destabilised and couldn't strike it properly," Simeone told Movistar+. "In some situations like that one, the referee didn't even go to VAR, same with one involving Antoine, and the decisions didn't go our way."

The Antoine Griezmann incident added more fuel to the fire. The French star was brought down by Calafiori, only for the referee to award a foul against Marc Pubill instead. Manager Diego Simeone struggled to hold back his frustration, calling the decision "clear" before catching himself, adding that he didn't want to make excuses. Captain Koke Resurreccion took a more diplomatic approach, simply saying he had "nothing to say" and that the referee was "doing the best he could."

The controversy takes on an extra layer given Arsenal manager Mikel Arteta's own complaints after the first leg, where he blasted the officiating as "a turning point in the tie" when an Atletico penalty was overturned. However, after the second leg, Arteta sang a different tune, telling AS: "I thought it was very good. There was nothing to criticise."

According to reports from AS, the anger inside Atletico's camp runs deep, with players and staff at the highest levels expressing major frustration over what they see as UEFA's machinery working against them. For a club that prides itself on grit and resilience, this exit will leave a bitter taste—and plenty of questions about the consistency of decision-making at Europe's top table.