The former Juventus striker is yet to break his scoring duck.
"I think the fact Matri is always in front of goal is important and comforting. The ball will go in eventually," Tassotti told Sky Sport Italia.
"Robinho is important and we tried to get him back in shape. I think compared to last season the leading pack are running quicker. We can't just sit here looking at the table and weeping. We've got to focus on ourselves."
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