In the fourth period , with 3 : 59 to play , Denison was called for intentional grounding in the end zone .
Royse City had a safety added to its score , making it 15 - 6 .
In the fourth period , with 3 : 59 to play , Denison was called for intentional grounding in the end zone , and Royse City had a safety added to its score , making it 15 - 6 .