Calzaghe out of title challenge

Joe Calzaghe has been forced out of his IBF light-heavyweight title challenge to Glen Johnson for a second time due to a back injury.

The Welshman had been confident of being fit for the rescheduled bout at Cardiff’s International Arena on July 24 after being initially ruled out of a slot on Ricky Hatton’s bill in Manchester last month.

But his injury flared up again following a recent training break in Sardinia and has proved to be more serious than first thought.