Monza claimed another big scalp in their dream debut Serie A season with Sunday's 2-0 win over newly-crowned champions Napoli.
Goals in each half from Dany Mota and former Napoli striker Andrea Petagna were enough for Monza to add Luciano Spalletti's side to a list of beaten teams which also includes Juventus and Inter Milan.
Their fourth win in an unbeaten run of seven matches has Monza ninth, level on 49 points with Fiorentina who beat Udinese 2-0.
Defeat makes little difference to Napoli as they already sealed their first league title since 1990 earlier this month.
Torino are also on 49 points in 10th after beating Verona 1-0 in the day's early match and sending their opponents into the relegation zone.
Verona swapped placed with Spezia, surprise winners against AC Milan Saturday, due to the two clubs' head-to-head record as they are locked on 30 points.
Later Roma drew 0-0 away to Bologna while Juventus beat Cremonese 2-0.
RESULTS
Bologna 0 Roma 0
Juventus 2 (Fagioli 55, Bremer 79) Cremonese 0
Verona 0 Torino 1 (Vlasic 29)
Monza 2 (Mota 18, Petagna 54) Napoli 0
Fiorentina 2 (Castrovilli 7, Bonaventura 90) Udinese 0
Saturday
Inter 4 (Lukaku 41, 89, Tressoldi 55-og, Martinez 58) Sassuolo 2 (Henrique 63, Frattesi 77)
Salernitana 1 (Candreva 90+3) Atalanta 0
Spezia 2 (Wisniewski 75, Esposito 85) Milan 0
Friday
Lazio 2 (Immobile 34, Milinkovic-Savic 90+4) Lecce 2 (Oudin 45+2, 51)
