Napoli have snatched back the Serie A lead with a 4-1 win at Cremonese, helped by a grandstand finish with two goals in added time.
Atalanta had briefly taken the Italian league lead after a 2-2 draw at Udinese earlier on Sunday, but Napoli put themselves back on top with a two-point cushion after their resounding win in Cremona.
Napoli opened the scoring with a penalty in the 26th minute after Khvicha Kvaratskhelia was clumsily tackled inside the box by Matteo Bianchetti and striker Matteo Politano had no problem with his spot kick.
Cremonese equalised two minutes into the second half when Cyriel Dessers latched on to a through ball into the box and hammered it in.
Giovanni Simeone put Napoli ahead again when he jumped to reach a cross from Mario Rui and headed into the net in the 76th minute.
Three minutes into added time, Georgian Kvaratskhelia passed to an unmarked Hirving Lozano who scored from close range, before Mathias Olivera finished off the match with a header in the 95th minute.
Napoli, after seven wins and two draws in their nine matches, now have 23 points, two ahead of Atalanta, who missed a big opportunity after being two up against Udinese.
Nehuen Perez and Gerard Deulofeu cancelled out goals from Atalanta’s Ademola Lookman and Luis Muriel to allow Udinese to rescue a point and move level into third place, leading defending champions AC Milan on goal difference.
Silvio Berlusconi-owned Monza made it a hat trick of victories with a 2-0 win over Spezia to propel themselves into mid-table.
Monza lost five of their opening six matches before recording a first-ever Serie A victory – a sensational one – over Juventus before the international break.
Elesewhere, sub Boulaye Dia scored in stoppage time as Salernitana snatched a 2-1 win over Hellas Verona.
There was a brawl shortly afterwards and Salernitana captain Ivan Radovanovic was shown a red card while Verona defender Federico Ceccherini was also sent off from the bench.
Also, Torino drew 1-1 against Empoli.