Juventus players were pelted with missiles by their own fans ahead of Sunday's Serie A home clash against Atalanta at Turin's Stadio Olimpico.
As the team boarded their bus from the hotel they stay at on the night before games, they came under fire from a hail of beer bottles and eggs, reported the Ansa news agency.
Fans, disgruntled at the team's dire form this season, also tried to prevent the bus from leaving and the police had to intervene to allow Juve's players to escape unscathed.
Before the barrage of missiles, fans had hurled abuse at the team, singling out in particular three players: Italy captain Fabio Cannavaro, French full-back Jonathan Zebina and Brazil midfielder Felipe Melo.
Zebina was also shown on Sky TV to have been struck on the neck by a fan as he went to board the bus, although he didn't react.
Ahead of the match, which kicked off at 1300GMT, Juve coach Alberto Zaccheroni hit out at the behaviour of those fans.
"I didn't see the strike but you can't raise your hand to someone, that's not part of a civil society," he said.
"However, protesting against the team's results that's something else, we can accept it."
Fans continued their protests inside the ground, meeting the kick-off against Atalanta with a wall of silence.
Juve have already suffered 11 defeats in 30 league games this season and have been bundled out of the Champions League, Europa League and Italian Cup.
At the start of play they sat sixth in Serie A, six points behind Palermo in the crucial fourth spot but with a game in hand and face the very real risk of missing out on Champions League football next season.