At left, in a May 4, 2013, file photo, Floyd Mayweather Jr. exchanges punches with Robert Guerrero (not shown) in a WBC welterweight title fight in Las Vegas. At right, in a Nov. 12, 2011, file photo, Manny Pacquiao exchanges punches with Juan Manuel Marquez (not shown) during a WBO welterweight title fight in Las Vegas. Don't expect to snag a $1,500 nosebleed ticket _ or any other ticket _ at the box office for the fight between Floyd Mayweather Jr. and Manny Pacquiao. Just two weeks before the bout, tickets for the most anticipated fight in recent times have yet to go on public sale, with the two camps and the MGM Grand locked in a standoff over allotments. (AP Photo/Isaac Brekken, File)
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