Milan warmed up for their Champions League group opener against Anderlecht on Tuesday by suffering a shock 1-0 home defeat to strugglers Atalanta last night.
Milan, who lost the spine of their team earlier this summer after selling Zlatan Ibrahimovic and Thiago Silva to Paris Saint Germain, opened their season with defeat to Sampdoria.
And despite a promising 3-1 win over Bologna two weeks ago thanks to a hat-trick from Giampaolo Pazzini, it was more of the same at the San Siro where Milan were stunned by a superb 64th-minute drive from Luca Cigarini.
Atalanta’s first win of the season, after one defeat and a draw, gives them some positive equity after they started the season minus two points for their role in the ‘Calcioscommesse’ illegal betting scandal.
German Denis had given them the first warning when his deflected shot hit the post in the 21st minute as Atalanta played an astute counter-attacking game.
Atalanta goalkeeper Andrea Consigli was tested just twice in the first half, first from Stephan El Shaarawy's shot and then from his own defender.
A Massimo Ambrosini effort also tested Consigli's grasp with Pazzini only inches away from reaching the rebound.
Atalanta took a not completely undeserved lead in the 64th minute when Cigarini's low shot from 20 yards found the bottom corner of Christian Abbiati's goal.
After the succession of excruciatingly near misses, an inch made the difference at the other end to keep Milan in the game as Abbiati tipped Maximiliano Moralez's shot over the crossbar in the 88th minute.
But despite being granted over six minutes of stoppage time, Milan failed to find an equaliser as the pressure increased on Milan coach Massimiliano Allegri after just three games of the season.
Earlier yesterday, Marco Sau scored a 83rd-minute leveller for Cagliari as the Sardinians stunned fellow islanders Palermo to grab a share of the points in Sicily.
Serie A
Milan 0
Atalanta 1
Cigarini 64;
HT: 0-0. Att: 34,363.
Palermo 1
Rios 40;
Cagliari 1
Sau 88;
HT: 1-0. Att: 12,625.
Standings
| P | W | D | L | F | A | Pts | |
| Juventus | 2 | 2 | 0 | 0 | 6 | 1 | 6 |
| Napoli | 2 | 2 | 0 | 0 | 5 | 1 | 6 |
| Lazio | 2 | 2 | 0 | 0 | 4 | 0 | 6 |
| Sampdoria (-1) | 2 | 2 | 0 | 0 | 3 | 1 | 5 |
| Roma | 2 | 1 | 1 | 0 | 5 | 3 | 4 |
| Catania | 2 | 1 | 1 | 0 | 5 | 4 | 4 |
| Torino (-1) | 2 | 1 | 1 | 0 | 3 | 0 | 3 |
| Genoa | 2 | 1 | 0 | 1 | 4 | 3 | 3 |
| Inter | 2 | 1 | 0 | 1 | 4 | 3 | 3 |
| Milan | 3 | 1 | 0 | 2 | 3 | 3 | 3 |
| Fiorentina | 2 | 1 | 0 | 1 | 2 | 2 | 3 |
| Chievo | 2 | 1 | 0 | 1 | 2 | 2 | 3 |
| Parma | 2 | 1 | 0 | 1 | 2 | 2 | 3 |
| Atalanta (-2) | 3 | 1 | 1 | 1 | 2 | 1 | 2 |
| Cagliari | 3 | 0 | 2 | 1 | 2 | 4 | 2 |
| Palermo | 3 | 0 | 1 | 2 | 1 | 7 | 1 |
| Udinese | 2 | 0 | 0 | 2 | 2 | 6 | 0 |
| Bologna | 2 | 0 | 0 | 2 | 1 | 5 | 0 |
| Pescara | 2 | 0 | 0 | 2 | 0 | 6 | 0 |
| Siena (-6) | 2 | 0 | 1 | 1 | 1 | 2 | -5 |
Playing today – 15.00
Chievo vs Lazio - 12.30
Fiorentina vs Catania
Genoa vs Juventus
Napoli vs Parma
Pescara vs Sampdoria
Roma vs Bologna
Siena vs Udinese
Torino vs Inter - 20.45
Next fixtures
Saturday: 18.00 Parma vs Fiorentina; 20.45 Juventus vs Chievo.
Sunday: 12.30 Sampdoria vs Torino. 15.00 Atalanta vs Palermo; Bologna vs Pescara; Cagliari vs Roma; Catania vs Napoli; Inter vs Siena; Udinese vs Milan. 20.45 Lazio vs Genoa.
Serie B
Ascoli 2 - Spezia 0
Cittadella 1 - Lanciano 0
Grosseto 1 - Crotone 0
Livorno 4 - Empoli 2
Novara 1 - Juve Stabia 1
Reggina 2 - Modena 2
Sassuolo 2 - Pro Vercelli 1
Ternana 0 - Cesena 0
Vicenza 2 - Verona 3
Playing tomorrow
Varese vs Bari - 20.45
Standings: Sassuolo, Livorno 12; Varese (-1), Verona 8; Spezia 7; Crotone, Cittadella 6; Bari (-5), Vicenza, Brescia 4; Modena (-2), Ascoli (-1), Pro Vercelli 3; Novara (-4), Reggina (-3), Lanciano, Juve Stabia 2; Padova (-2), Ternana, Empoli (-1), Cesena 1; Grosseto (-6) -1.