It was a historic weekend in Las Vegas as some of the greatest fighters of all time gathered to launch a pension fund designed to help former fighters who have fallen on hard times. The honorees were Mike Tyson, Larry Holmes, George Foreman, Ken Norton, Thomas Hearns, Sugar Ray Leonard, Roberto Duran, Jeff Fenech, Oscar de la Hoya, Azumah Nelson, Julio Cesar Chavez Sr. and Lennox Lewis. Dozens of other fighters were also spotted at various points over the weekend including Iran Barkley, Zab Judah, Terry Norris and Celestino Caballero. Here are some photos taken over the two days.