During the penultimate round of league games all teams had to play with closed doors due to the H1N1 swine flu outbreak in infected cities. Several games taking place in areas which were badly affected by the outbreak were also played behind closed doors the following week. Games behind closed doors have been played regularly as a penalty for bad behavior of fans in Mexico, most recently an Apertura 2015 game in which Atlas hosted Querétaro at Estadio Jalisco because of last season quarterfinal game in which Atlas fans invaded the pitch against their hated rivals Guadalajara.[9]