The Real Madrid goalkeeper has accepted the blame for Spain's thrashing by World Cup opponents Holland.
Maradona told Telesur: "He had the worst game I've ever seen in my life...and it reminds me of what my friend Mourinho told everyone about him.
"He said Casillas wasn't the right keeper and he paid for that. He had to leave, but in the end it turns out that Mourinho was right."
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