WINS BY DEVASTATING FIFTH-ROUND KNOCKOUT; UNBEATEN CONTRERAS STOPS CASTANEDA IN THE FIRST Friday, Feb. 5, 2010, Live on SHOWTIME Chumash Casino Resort, Santa Ynez, California SANTA YNEZ, Calif. (Feb. 6, 2010) – With one sudden, dramatic right hand, once-beaten Freddy “El Riel’’ Hernandez (28-1, 19 KOs) of Lynwood, Calif. broke open an entertaining, dead-even fight…