On 2 February 1964, Atalanta lost 7–1 at home against Fiorentina; this was the club's worst ever home defeat. This result outraged the fans, requiring police intervention to prevent violence between them and the players. Quario's tactical choices were also questioned, causing him to be sacked after the match and replaced by Carlo Ceseroli. The club would eventually finish in the middle of the standings, but the season was marred by Turani's death on 25 April 1964. Attilio Vincentini, who was nominated by ex-coach Luigi Tentorio, replaced him as president that summer. Tentorio left club management (and the world of football altogether) in 1966 when all football clubs were made into joint-stock companies, for he fundamentally disagreed with this idea. Later in the 1960s, Atalanta participated in a few continental (though not UEFA) competitions: the Intertoto Cup (then also known as the Coppa Piano Karl Rappan) in 1966–67 and the Mitropa Cup in 1967–68 and 1968–69. The 1967–68 season saw Atalanta only narrowly escape relegation: Tabanelli, having returned for a second stint as manager in 1967, was replaced as coach by former captain Stefano Angeleri during the season due to poor results. After succumbing to a last-minute 1–0 loss against SPAL on the third-to-last day, a result which tied both clubs at 22 points, Atalanta's survival was ensured thanks to better results than the latter in the final two matches. However, the club would not escape relegation in 1969, ending a run of ten consecutive seasons in the top flight. In February 1969, took over as president following Vicentini's resignation, though he would be replaced as president after just one year by Achille Bortolotti—who had already been a partial shareholder for several years—following disagreements in management among Bortolotti, Baracchi, and Massimo Masserini.