RIO DE JANEIRO (AP) — The Latest on the 2016 Summer Olympics in Rio de Janeiro (all times local):
6:20 a.m.
It only took 17 years — and 43.03 seconds.
Exploding out of the blocks Sunday, Wayde van Niekerk of South Africa broke Michael Johnson's 17-year-old world record in the 400 meters in Rio de Janeiro, leaving two of the greatest one-lap runners of this era in his dust.
Van Niekerk finished 0.15 seconds faster than Johnson ran in 1999, setting a mark considered one of the almost untouchable records in track.
"I thought someone was going to catch me," van Niekerk explained.