Local hurdling hero Javier Culson, 2013 IAAF World Championships gold medallists LaShawn Merritt and Caterine Ibarguen, as well as Hungary s London 2012 Olympic Games hammer gold medallist Krisztian Pars lead a field of 27 former and current World and Olympic medallists who will compete at 8th Ponce Grand Prix, an IAAF World Challenge meeting, in Puerto Rico on Saturday (17).