Sydney McLaughlin-Levrone ran the fastest women’s 400 metres in 40 years to claim world championship gold in 47.78sec on Thursday and complete her transition from the one-lap hurdles in emphatic style. The American stormed through the Tokyo rain to add a first global gold in the flat 400m to the two Olympic and one world titles she won over the hurdles. #sydneymclaughlinlevrone #sydneymclaughlin #usatrack #worldchampionship | Reese Waters