After two days of clean baseball allowed it to clinch a road series win, Northwestern State did not play the same way Sunday, and it cost the Demons.Nicholls took advantage of four first-inning walks and a hit batter to grab an early six-run lead and cruised to a 13-5 win at Ben Meyer Diamond at Ray E. Didier Field to salvage one game of the Southland Conference series.“The whole story of the day…