Veronica Campbell Brown Sherone Simpson Blanka Vlasic Jessica Ennis Caster Semanya David Rudisha Tyson GayYohan Blake and Asafa Powell This is a list of track and fields whos who who will not be competing in Moscow during the 14th IAAF World Athletic Championship in Moscow that gets underway this weekend Injury and provisional suspensions will keep this elite list of athletes away from the eager eyes of fans of the sport for the eight days of competition that will determine