WEST HELENA, Ark. – In a thrilling 8-4A Conference opener, the Central (Helena) Cougars pulled off a stunning upset over the Stuttgart Ricebirds, securing an 18-17 victory Friday night on their home turf. The Cougars’ late-game heroics spoiled what had been a hard-fought battle for Stuttgart, handing the Ricebirds their first conference loss of the…