AC Milan beat Napoli for the second time in the space of less than two weeks and this time with more at stake as the Rossoneri won 1-0 in the first leg of their Champions League quarterfinal on Wednesday.
Ismal Bennacer scored shortly before the end of a first half that Napoli had dominated for long stretches. Both teams also hit the crossbar before Napoli midfielder Andr-Frank Zambo Anguissa was sent off 16 minutes from time, following two yellow cards in quick succession.
The teams will meet again in Naples next Tuesday with the winner to play either Inter Milan or Benfica in the semifinals. Inter won the first leg of their quarterfinal 2-0.
While Milan's victory was not as comprehensive as their 4-0 rout of Napoli when the two teams met in Serie A on April 2, it left the club in pole position to reach its first Champions League semifinal since it won the last of its seven titles in 2007.
The match pitted the defending Italian champions against the team likely to take their trophy, with Napoli boasting a 16-point lead in Serie A.
It was Napoli's first ever appearance in the quarterfinals and it was without a recognised striker as leading Serie A goalscorer Victor Osimhen and Giovanni Simeone were out injured and coach Luciano Spalletti opted to start Giacomo Raspadori on the bench and play Eljif Elmas in the false nine position.
Nevertheless, the visitors got off to an aggressive start and had four clearcut opportunities in as many minutes.
The best of those was after only 50 seconds as Milan failed to deal with a cross and a horrible Rade Krunic clearance fell straight to Napoli dangerman Khvicha Kvaratskhelia. But Krunic atoned for his error by clearing the shot off the line and Mrio Rui ballooned the follow-up over.
Milan goalkeeper Mike Maignan also came to his team's rescue several time before the Rossoneri had their first real chance in the 25th minute, completely against the run of play.
Rafael Leo, who had scored two goals in Naples in the league match, raced from inside his own half and past two Napoli players before unleashing a shot that went just the wrong side of the right upright.
The Portuguese forward took his frustration out on the corner flag, shattering it in the process.
Milan broke the deadlock five minutes from halftime as Brahim Daz sped forward from midfield and laid the ball off to the right of the area to Leo. His attempt at a one-two didn't quite come off but it came through to Bennacer to fire into the top near corner.
That was only Milan's second attempt compared to Napoli's eight.
The Rossoneri almost doubled their lead in stoppage time but Simon Kjr's thumping header came off the underside of the bar and bounced just the wrong side of the line for Milan.
Napoli should have levelled five minutes after the break but Maignan finger-tipped an Elmas header onto the bar. Their chances of doing so diminished when Anguissa was shown a second yellow card for a high tackle on Theo Hernndez four minutes after being booked for a foul on the same Milan defender.
Real Madrid beat Chelsea 2-0 in the other quarterfinal match on Wednesday.
