BELFIELD, N.D. — Over the course of the last three Heart River home games, the Cougars averaged exactly 13 runs per game against the upper echelon of Region VIII. And while they traded in their school Cougar logo for some Knight armor, it seems like not much else has changed from spring to summer. Belfield/South Heart opened its summer season at home against Hettinger and pushed across 11 runs on 13 hits to walk away with its first win of the se…