A.R.S. § 13-3308

In a prosecution under this chapter in which it is necessary to prove the occurrence of any event that is the subject of gambling, a published report of its occurrence in a daily newspaper, a magazine or any other periodically printed publication of general circulation is admissible into evidence and, on admission, it is presumed that the event occurred. This presumption may be rebutted. Either party may use additional evidence to prove or disprove the occurrence of the event.