The final show of this year's (05) Ozzfest has been cancelled just days after Ozzy Osbourne announced he is retiring as the roadshow's headliner.

The performance was originally scheduled for 7 August (05) at Floatrite Park in Somerset, Wisconsin, but was then moved to 10 September (05) to accommodate doctors' orders that Osbourne should not perform consecutive shows with Black Sabbath.

However, a number of Ozzfest acts were unable to change their itineraries to regroup for the new date.

A statement reads, "(Organisers) felt it was best to cancel the show instead of mounting anything less than a spectacular event, as fans have come to expect from the festival over the course of 10 years."

Ozzfest will now close on 4 September (05) in West Palm Beach, Florida.