All of the venues listed hosted knockout round matches except the ones in Nezahualcoyotl, Irapuato, Zapopan, Toluca and the Estadio Tecnologico in Monterrey. Twelve stadiums were selected to host the World Cup matches in twelve different cities. The Stadio San Nicola in Bari and Turin's Stadio delle Alpi were completely new venues opened for the World Cup. The remaining ten venues all underwent extensive programmes of improvements in preparation for the tournament, forcing many of the club tenants of the stadia to move to temporary homes. Additional seating and roofs were added to most stadia, with further redevelopments seeing running tracks removed and new pitches laid. Due to structural constraints, several of the existing stadia had to be virtually rebuilt to implement the changes required. Like Espana '82, the group stage of this tournament was organised in such a way where specific groups only played in two cities close in proximity to each other. Group A only played in Rome and Florence (Hosts Italy played all their competitive matches in Rome, except for their semi-final and third place matches, which were played in Naples and Bari, respectively), Group B played their matches in Naples and Bari (except for Argentina vs. Cameroon, which was the opening match of the tournament, played in Milan), Group C played their matches in Turin and Genoa, Group D played all their matches in Milan and Bologna, Group E played only in Udine and Verona, and Group F played on the island cities of Cagliari and Palermo. The cities that hosted the most World Cup matches were the two biggest cities in Italy: Rome and Milan, each hosting six matches, and Bari, Naples and Turin each hosted five matches. Cagliari, Udine and Palermo were the only cities of the 12 selected that did not host any knockout round matches. All matches, typical of a World Cup in Europe were played in the late afternoon or the evening to avoid the intense heat of an Italian summer. The England national team, at the British government's request, were forced to play all their matches in Cagliari on the island of Sardinia. Hooliganism, rife in English football in the 1980s, had followed the national team while they played friendlies on the European continent – the distrust of English fans was so high that the English FA's reputation and even diplomatic relations between the UK and Italy were seen to be at risk if England played any group stage matches on the Italian mainland.