The trial of four Italian clubs on match-fixing charges has been opened and adjourned.
Champions Juventus, plus Milan, Fiorentina and Lazio face the prospect of relegation and elimination form European competition if found guilty.
A six-strong panel of judges convened at the Olympic Stadium to try the clubs, plus 26 senior officials, referees and linesmen.
After hearing the initial legal submissions, the tribunal was postponed until Monday.
Judges delayed the case so the representatives of Bologna, Lecce, Treviso, Brescia and Messina, all of whom could be promoted to Serie A, could have time to prepare.
Italy has been gripped by the scandal since it broke in May, following the phonetapping of conversations involving former Juventus general manager Luciano Moggi and senior Italian Football Federation officials during the 2004-05 season.
They are with sporting fraud and unfair conduct, which could lead to the teams being relegated and see the individuals involved banned from football.
Other officials on trial include Milan vice president Adriano Galliani, Fiorentina owner Diego Della Valle and Lazio President Claudio Lotito. All have denied the changes.
Juventus, who have won the Serie A title for the last two seasons, are believed to be implicated in the more serious allegations.
Moggi resigned after Juventus claimed their 29th championship in May.
Eight referees have been charged, including Massimo de Santis, who had been set to officiate at the World Cup before being withdrawn.
The Italian Football Federation (FIGC), which appointed the tribunal, has said it would rule by 9 July – the date of the World Cup final.
Appeals are due to be heard by 20 July, giving the FIGC time before the deadline of 27 July to submit the names of teams to compete in next season’s European competitions.
Although the football trial is not a criminal proceeding, prosecutors in Naples, Rome, Parma and Turin have launched related inquiries which could lead to criminal charges against some of the accused.
