An injury to main event fighter Benson Henderson, who was set to fight Donald Cerrone for the interim lightweight title, is being reported for the reason for the postponement.
The event has now been rescheduled for a date of October 10 and will still be broadcast live on Versus.
It has not yet been announced if the original venue of Covelli Centre in Youngstown, Ohio will be the location of the postponed event. Had the event gone live, it would have marked the first time the WEC has ventured into Ohio.
There has also been no report on the injury Henderson has suffered, but he will still face Cerrone on the October 10 date.
All ticket refunds for the September 2nd event can be obtained at the point of purchase.