Top Rank's CEO Bob Arum discusses the rise of Mexican heavyweight prospect Andy Ruiz, who fights for the fourth time, in a ten round contest, on Saturday night on the HBO Pay-Per-View undercard to Manny Pacquiao vs. Brandon Rios in Macau, China. Ruiz (20-0, 14KOs) will take on experienced Tor Hamer of New York City. Hamer has scored two quick knockouts after losing to hot heavyweight Czar Glazkov last December. Ruiz has stopped his last six opponents.