Juventus game against Parma has been called off as a sign of mourning after a Gialloblu fan died in an accident on his way to Turin.
The two clubs agreed to postpone the game, as 27-year-old Parma supporter Matteo Bagnaresi was run over by a bus driven by Juve fans.
Parma have insisted it was "a tragic accident," but there are fears of crowd trouble and reprisals.
The accident happened at the Crocetta Nord motorway service station on the A1 between Alessandria and Asti.
According to reports from newspapers, the bus containing nine Juve fans was attacked and in his hurry to escape the situation, the driver accidentally ran over Bagnaresi.
The driver of the Juve bus was stopped a few kilometres away and insisted he had not even realised he had hit the Parma fan.
The Stadio Olimpico in Turin emptied out without problems as fans from both teams walked away.
This is the same round of games as the weekend in November when Lazio fan Gabriele Sandri was accidentally killed in a motorway service station by a stray police officer's bullet.