 Admissions to hospital emergency rooms have been reported to increase ninefold over normal levels and in the period from 1996 to 2003, eight deaths in Glasgow were directly linked to Old Firm matches, and hundreds of assaults.Both sets of fans fought on the pitch after Celtic's victory in the 1980 Scottish Cup Final at Hampden Park.There was serious fan disorder during an Old Firm match played in May 1999 at Celtic Park; missiles were thrown by Celtic fans, including one which struck referee Hugh Dallas, who needed medical treatment and a small number of fans invaded the pitch.