The first leg of UD Almería's promotion play-off semi-final against CD Castellón passed in a spirit of respect, despite the high pressure. The fans of both teams mingled in the streets and bars without incident. The atmosphere at Castalia was positive and many Almería fans praised the performance of the local crowd on social media. Some rated the performance of the crowd as a ten and placed Castalia among the best atmospheres in Spain's Segunda División. Others highlighted the pressure generated from the stands and stated that, if Almería do not win promotion, they will back Castellón for the rest of the play-offs. After the game, many Almería fans took to social media to express their admiration for the attitude of the Castellón fans. The attitude of the Castellón fans was highlighted as an example to follow in the Spanish league. The promotion play-off semi-final between UD Almería and CD Castellón is an important match for both teams, as both seek promotion to the Spanish First Division.