Not a full week after the United States celebrated its Independence Day, UC Davis head track & field coach Rahn Sheffield represented his country as a member of Team USA's coaching staff at the 2018 IAAF World U20 Championships.<\/div>\r\n\t\t<\/div><\/td><\/tr><\/table>\r\n\t\t\t\t<\/div>\r\n\r\n\r\n\r\n\r\n\r\n