Walter Mazzarri made a winning return as Napoli coach on Saturday with the champions' hard-fought 2-1 victory at Atalanta, while AC Milan held on to third in Serie A after beating Fiorentina 1-0.
Eljif Elmas netted the decisive goal 11 minutes from the end at the Gewiss Stadium in Bergamo after Khvicha Kvaratskhelia's headed opener for the away side on the stroke of half-time was levelled by a similar strike from Ademola Lookman.
North Macedonia midfielder Elmas rolled home the winner from substitute Victor Osimhen's pass following Atalanta goalkeeper Marco Carnesecchi's poor clearance, making sure that Napoli stayed fourth.
Mazzarri's team are still seven points behind leaders Inter Milan who travel to Turin on Sunday for the weekend's big match at second-placed Juventus. "The team dominated all last season, playing some of the best football in Europe with players who were not used to being in that position," Mazzarri told DAZN. "There was always going to be some drop-off after that." Mazzarri returned to Napoli last week after Rudi Garcia was sacked, reprising a role he left just over a decade ago after being the man to take southern Italy's biggest club back to the upper echelons of Italian football.