Inter Milan legend Marco Materazzi felt Mario Balotelli was outstanding for AC Milan in the derby.
Balotelli missed several chances during the 1-1 draw.
But Materazzi argued: "I think he was decisive, he did what he has to do as a great player and only a great (Samir) Handanovic prevented him from scoring.
"No matter what anybody says, I consider him also mature, because he knows when he has to breakout the game."