A rare goal from full back Matteo Darmian earned Inter Milan a 1-0 victory over Cagliari on Sunday, as Antonio Conte's side closed on their first Serie A title in 11 years.
Juventus however eased to a 3-1 victory over Genoa to keep alive their faint hopes of making it 10 successive Serie A titles this season. Third-placed Juventus moved on to 62 points after 30 matches, one behind AC Milan and 12 adrift of leaders Inter Milan.
Struggling Cagliari were proving to be a tough nut to crack in the San Siro, with debutant goalkeeper Guglielmo Vicario making several fine saves to keep the league leaders at bay.
But the visitors' resistance was broken by an unlikely source in Darmian, whose second league goal of the season in the 77th minute secured Inter a 11th successive league win.
"I like to repeat - these matches are starting to feel like victories are worth six points," Conte told DAZN. "Milan won (on Saturday) and it was important for us to keep our lead. It is not easy but we are getting used to it. "For many it is the first time being under pressure like this, playing always to win. I am very satisfied with what we are doing."