Macau, China - Manny Pacquiao and Brandon Rios make weight for their welterweight fight on Saturday night, as they battle in the headline bout of an HBO Pay-Per-View event. Also on the show, Olympic two-time gold medal winner Zou Shiming, Puerto Rican Olympian Felix Verdejo, and a rematch between IBF super featherweight champion Evgeny Gradovich and hungry ex-beltholder Billy Dib.