Wearing a pair of white and silver Nike Zoom 400 spikes, Michael Norman continued his assault on the 400-meter record book. The 21-year-old San Diego native and former USC runner clocked a world-leading 43.45 seconds to win the men’s invitational 400 meters at the Mt. SAC Relays on April 21 in Torrance, CA. His effort not only broke the previous meet record of 44.45 set by Steve Lewis in 1992, but it also tied the third all-time American performer (Jeremy Wariner in 2007) and the fourth-fastest of all-time behind South African Wayde van Niekerk (43.03, 2016) and American legends Michael Johnson (43.18, 1999) and Butch Reynolds (43.29, 1988). Norman’s time is the second fastest ever run on U.S. soil, trailing only Johnson’s 43.44 run at the 1996 Atlanta Olympics. It’s also the fastest 400 ever run in April; the other seven fastest times were run in August.