Rivera: AC Milan's Pirlo, Kaka both worthy Ballon d'Or winners

Rivera said: "Kaka is one of the most important and interesting players of recent times.

"Pirlo is a player of great performance, with consistency, I would say that he is the same level of Kaka. In terms of performance, he is perhaps more effective than Kaka. Kaka is great racing towards the goal, while the consistency of Pirlo to invent things is also very important."

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