Led by Athing Mu, youth takes center stage at U.S. Olympic track and field trials

Both running their first professional races, both trying to make their own brand of history, Mu, 19, and 18-year-old men’s 1,500 hopeful Hobbs Kessler played starring roles at Hayward Field — with 18-year-old Nico Young qualifying for the final of the men’s 5,000 meters late at night, on the heels of heat winner and 2016 silver medalist Paul Chelimo.