Chelsea manager Carlo Ancelotti and others were due to give evidence in Naples on Tuesday, but a short hearing announced the trial has been adjourned until April 27.
Manchester City boss Roberto Mancini has also been summoned to give evidence.
Both Ancelotti and Mancini, who were in charge of AC Milan and Inter Milan respectively during the 2006 scandal, have been called as witnesses. Neither are accused of any wrongdoing.
Juventus official Luciano Moggi has been accused of being the mastermind at the centre the scandal by influencing the appointments of referees, with telephone conversations recorded as a result of a criminal investigation by the Naples prosecutors office.
The Turin club were stripped of the title and relegated to Serie B when the revelations surfaced, while AC Milan, Fiorentina, Lazio and Reggina were also punished by the Lega Calcio.