Santa Monica,Ca.   ---  Ray Beltran of Mexico works out at the Wild Card  West Boxing Club for his upcoming 12-round feature fight against Rocky Martinez of Puerto Rico on the undercard of Manny Pacquiao-Timothy Bradley 2.   Promoted by Top Rank®, in association with MP Promotions and Tecate, Pacquiao vs. Bradley 2 will take place, Saturday, April 12 at the MGM Grand Garden Arena in Las Vegas, Nevada.  It will be produced and distributed live by HBO Pay-Per-View® beginning at 9:00 p.m. ET/6:00 p.m. PT.   --- Photos by Chris Farina/Top Rank.