Felipe Melo hit the opener for the Old Lady on 21 minutes, but Samuel Eto'o netted a leveler for the defending champions five minutes later.

Claudio Marchisio put Juventus ahead once again two minutes from the hour mark, and the hosts kept their slender lead till the final whistle.

Third-placed Juventus are now on 30 points, four adrift of leaders Inter. AC Milan lie second with 31 points.