AC Milan starlet Francesco Camarda made history on Saturday after becoming the youngest ever player to play in Serie A during Saturday's 1-0 win over Fiorentina.
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
Gianluigi Donnarumma will be given a fierce reception on Tuesday when he faces crisis-club AC Milan at the San Siro for the first time since jumping ship for Paris Saint-Germain and becoming public enemy number one.
AC Milan are in a difficult group that includes Borussia Dortmund and Newcastle United.
Paris Saint-Germain's Champions League clash with AC Milan this week will see the French club come up against one of the many outstanding talents they have let slip away in recent years.
Khvicha Kvaratskhelia helped put Napoli's Serie A title defence back on track with a brace in Saturday's 3-1 win at Verona which moved the champions four points behind leaders AC Milan.
Inter rebounded from their first loss of the season midweek against Sassuolo thanks to a sensational second-half display from Martinez.
Portugal winger Leao netted his third goal in as many league matches in the eighth minute at a sodden San Siro to move Milan up to second on 12 points from five games