Treviso-Grosseto will resume from the 21-minute mark on Wednesday May 14 after play was abandoned when a policewoman shot herself outside the stadium.
Under new rules the game will resume from where it stopped rather than be replayed in its entirety.
This means Grosseto will kick off leading 1-0 and the remaining 69 minutes will be played on Wednesday May 14, starting at 17.00 UK time.
Grosseto were leading 1-0 at the Stadio Tenni on Saturday afternoon when two shots were heard echoing around the arena.
The group of Treviso fans closest to the incident urgently called for play to stop and help to be sent to the area behind their end of the stadium.
42-year-old policewoman Luciana Callegher had shot herself in the head, slightly injuring a colleague who tried to stop her from the suicide attempt.
She is currently in a coma after emergency surgery and her condition remains critical.