USATF National JO Outdoor Track and Field Championship Dayn Jackson Aug 13, 2014 Tags: USATF National JO Outdoor Track and Field Championship Race All heats of the 16U Boys 4x100 Prelims at the 2014 USATF National Junior Olympic Championships held in Houston, TX - 7/21/2014 to 7/27/2014.Best viewed in 1080p HD