Defending champion Juventus extended its unbeaten streak to 48 games with a 1-0 win at 10-man Catania in Serie A after the latter had a goal disallowed.
Catania thought it had taken a first-half lead when Gonzalo Bergessio fired in on Sunday but the strike was disallowed. The reason was not immediately clear - either offside or a handling offence.
Catania president Antonino Pulvirenti was sent from the bench and, in the ensuing five minutes, five of its players were booked.
To add insult to injury, Nicklas Bendtner was in an offside position in the build-up to Arturo Vidal's second-half goal.
Giovanni Marchese was sent off after receiving his second booking to cap a miserable day for Catania.
Defender Nicola Legrottaglie has signed a one-year contract extension with Catania, the Serie A club has announced.