Las Vegas,Nevada  ---   Ray Beltran from Los Mochis, Mexico winds down training camp as he prepares to take on Takahiro Ao from Chiba, Japan in the main event, a 12-round bout for the vacant  WBO Lightweight World Championship , Friday, May 1st.  truTV and  Top Rank will partner to exclusively televise a  live Friday night primetime boxing series beginning  Friday, May 1, at 10 p.m. ET.  The new boxing series, in association with Turner Sports and HBO Sports, will launch on the eve of the Floyd Mayweather vs. Manny Pacquiao pay-per-view fight with a card featuring two title bouts inside The Chelsea at The Cosmopolitan of Las Vegas. Photos by Chris Farina/Top Rank.