Juan Castaneda Jr

© M.L. Preissel / Showtime Boxing Promising Freddy “El Riel’’ Hernandez (27-1, 18 KOs), of Lynwood, Calif., will take on former world champion, southpaw DeMarcus “Chop Chop’’ Corley (36-12-1, 21 KOs), of Washington, D.C., in the 10-round welterweight main event on ShoBox: The New Generation tonight, Friday, Feb. 5, on Showtime at 11 p.m. ET/PT,…