World U20 200m champion Michael Norman clocked a world indoor record* of 44.52 to win the 400m at the NCAA Indoor Championships in College Station, Texas, on Saturday (10).The University of Southern California student had seen Auburn University’s Akeem Bloomfield clock a Jamaican indoor record of 44.86 in the first race of the two-heat final just moments before. 20-year-old Norman, contesting just his third indoor 400m race to date, breezed through the first lap in 21.33 and maintained his lead to cross the line in 44.52.