IAAF to consider Rio schedule change for Felix

American sprinter Allyson Felix's pursuit of a rare 200-400 meters double at the Rio Olympics gained momentum on Monday when U.S. officials asked the IAAF for a schedule change to make an attempt possible. "We did receive an official request today from USATF," Paul Hardy, competitions director for the International Association of Athletics Federations (IAAF), told Reuters in an email. "Allyson is the most decorated female athlete in IAAF history and should have the chance to go for a double, com