Massimiliano Allegri’s side prevailed at a packed San Siro thanks to Manuel Locatelli’s long-range strike in the 62nd minute, seven years to the day after scoring the winning goal for Milan against Juve.
Juve, who like Milan were missing a clutch of first-choice players from their starting 11, stay third but are closing in on Inter and are a point behind Milan, who surrendered top spot to their local rivals.
A product of Milan’s youth system, Locatelli broke down in tears at the final whistle but his shot wouldn’t have got past third-choice goalkeeper Antonio Mirante had it not been for a massive deflection off substitute Rade Krunic.
“It’s always special playing here,” said Locatelli to DAZN.
“Life took me on another path and I’m playing for the team I should be. But it’s amazing that it was my goal which won it. It was emotional.”
Mirante, starting his first match in over two years, hadn’t had a single save to make up to that point, even after Malick Thiaw was sent off five minutes before the break for rugby-tackling Moise Kean.
Italy forward Kean then missed a golden opportunity to put Juve ahead on the stroke of half-time when he pushed Adrien Rabiot’s deep cross wide from inches out.
Milan started the second half stronger but Locatelli’s goal deflated the hosts and led to the rest of the match being almost a non-event, as Juve were content to simply control the match rather than press home their advantage.
Mirante did make his presence felt late on, neatly tipping over substitute Dusan Vlahovic’s drive with five minutes remaining and pulling off a brilliant double save from Andrea Cambiaso and Vlahovic.
Milan now have to travel to Paris Saint-Germain on Wednesday before facing champions Napoli in Naples next weekend after an unfortunate defeat.
“We played well with 11 men, we played well with 10 men, if we’d been a bit more alert then we could have got a result because we weren’t the worse team even when we were a man down,” said Milan coach Stefano Pioli.
Roma’s late show
Stephan El Shaarawy pushed Roma to within touching distance of the Champions League places when he scored the only goal in a 1-0 win over Monza at the Stadio Olimpico in Rome.
Roma, who also struck the woodwork late on through Romelu Lukaku and Sardar Azmoun, are seventh following their third straight league win and are three points behind Napoli and fourth-placed Fiorentina, who face Empoli on Monday.
El Shaarawy’s first goal of the season came in the final minute of a tough match against 11th-placed Monza, who had to play the entire second half with 10 men following Danilo D’Ambrosio’s harsh sending off for two bookable offences four minutes before half-time.
“When I saw Azmoun’s shot, more than Lukaku’s, hit the post I thought, ‘Bah, if that doesn’t go in’…but Stephan has a feeling for goals and scoring late so he won the match for us,” said Mourinho to Sky Sport.
Mourinho was sent off in stoppage time as tensions flared between the two dugouts after El Shaarawy struck, the Portuguese making a crying motion at the Monza staff.
Defeat for Monza was harsh as the away side put up a brave fight despite being a man down for half the match, El Shaarawy’s winner the first goal they have conceded from open play since being thumped by Atalanta at the start of September.
Roma were briefly sixth but were bumped down a place by Atalanta, who squeezed to a 2-0 win over promoted Genoa that took them up to 16 points, two ahead of Mourinho’s team.
Bologna are nestled behind Roma on goal difference after beating promoted Frosinone 2-1 while Filippo Inzaghi’s new team Salernitana and Cagliari drew 2-2 in a frantic match between two struggling sides.