without Diego we look lost and he's only played 1 game for us
It wasn't Diego. The players were exhausted you could tell that. Additionally, we played 3 matches prior to this one and Diego has only played 60 min of those 3 matches.
But our midfield consisted of Camo, Marchisio, Melo, Giovinco. Now on paper it looks good but in fact, only one of them who can actually create for others.
Melo and Marchisio can't.
Giovinco is yet to prove himself as a play maker. He can create for himself but he is yet to learn how to distribute the ball around.
So it was upto Camoranesi to do all the work. Maoro was pretty tired. So no big shows, and when he did do something our forwards were totally off the game so we did not score.
Now if Del Piero, Tiago, Diego or even Zanetti had started the game things would have been different. In addition to Camoranesi those 4 are the ones who know who to pass the ball around to open spaces in the opponent backline.