AC Milan hammered runaway Serie A leaders Napoli 4-0 on Sunday in an incredible performance which slammed the brakes on their opponents' charge to a first league title in over three decades.
Rafael Leao outshone Khvicha Kvaratskhelia in the battle of the wing wizards with a brilliant brace while Brahim Diaz and Alexis Saelemaekers netted the other goals for the rampant defending champions who move up to third.
The biggest win of the Serie A season for Stefano Pioli's side was also a third league defeat for Napoli, whose huge lead at the top of the table has been cut to 16 points after second-placed Lazio beat Monza 2-0 earlier on Sunday.
A difficult 2023 has left Milan 20 points off the pace but they have struck first blood in a trio of matches against Napoli which will conclude this month with the Champions League quarter-final between the two Italian teams.
"It's an incredible feeling, but even if I hadn't scored today, we still played very well," said Leao after his first goals since mid-January.
Napoli were without injured star striker Victor Osimhen but an otherwise first choice line-up was humbled by Milan who have boosted their chances of qualifying for next year's edition of Europe's top club competition.
Milan are however only a point above local rivals Inter Milan and Roma, who sit fifth on goal difference following their 3-0 win over Sampdoria.
"It's only the first step… we have another 10 matches left in the league in which we need to have the same attitude," Pioli told DAZN.
"We threw away chances in the past and that can't happen any more. I'm happy with the win but it's only one game.
"For this to be a good season we need to be playing in the Champions League next season."
Diaz was at the heart of Milan's fast start and it was his delightful pass which slipped through Leao and allowed the Portugal winger to dink the away side ahead in the 17th minute.
And the home fans was stunned into near silence eight minutes later after more brilliant play from Diaz, who collected Ismael Bennacer's cross before cutting inside Mario Rui and then lashing in from close range.