Joe Calzaghe is unfazed by Peter Manfredo Jnr's threat that he will be the one to end the Welshman's reign as WBO super middleweight champion.
Manfredo, who rose to fame on reality television series 'The Contender', says he will get the better of Calzaghe in their Cardiff bout next March.

Calzaghe told the ESPN website: "He's well known in America and a tough kid.

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