LOS ANGELES – Before Israel Vazquez (42-4, 32 KOs) and Rafael Marquez (37-4, 33 KOs) renew boxing’s most exciting rivalry on Saturday night, fight fans get to catch young, promising, fighters on the under card of the most highly anticipated rubber match of the year. Some of the boxers boast ties to the well-regarded, prospect-based series, ShoBox: The New Generation (Showtime), which has produced 23 current or former world champions in its six year history. [details]