In the world of professional football, there's no doubt that players are the stars of the show. They are the ones who get paid millions of dollars to score goals, make miraculous saves, and entertain thousands of fans in packed stadiums. But what about the fans themselves? They are the ones who show up week after week to support their favorite teams, rain or shine. They are the ones who sing their hearts out, wave flags and banners, and create an atmosphere that can make or break a game. In the Columbian league, known as Categoria Primera A, fans are particularly passionate about their clubs. In fact, they are often referred to as the "12th player" on the field. In this article, we'll explore the role of fans in the league and how they contribute to the success of their teams. From the infamous "ultras" to the more casual supporters, we'll take a closer look at what makes fans in Categoria Primera A so special.