AC Milan suffered their joint-heaviest ever Serie A defeat as they were hammered 5-0 at Atalanta in the Lombardy derby.
It equals the Rossoneri's worst-ever loss in the competition and is the first time since a 5-0 drubbing at Roma in 1998 that they have lost by a five-goal margin.
Alejandro Gomez opened the scoring after 10 minutes but Milan's collapse really began after half-time.
Ilicic scored again after 72 minutes before Luis Muriel completed the rout seven minutes from time.
The humiliating loss leaves Milan 10th in Serie A and brings a four-game unbeaten run to a shuddering end.