Phyllis Francis (Personal Best of 49.92) Upsets both Rio Olympic champ Shaunae Miller-Uibo (50.49 / 4th ) & Allyson Felix (50.08 / 3rd) at the line. Although Uibo looked like she was going to end up with the title she stumbled with a few meters to go and was over taken by Francis' kick. Young Salwa Eid Naser of Bahrain claims silver with a national record of 50.06 #London2017 #WorldChampionships #RoadtoLondon #TrackChampionships #TrackandField #TrackNation #Sports #SportsPhotography #TrackNation #FloTrack #RunnerSpace #Dyestat #Athletics #IAAFWorlds #400 #PhyllisFrancis #ShaunaeMillerUibo #AllysonFelix #Womens400 #Canon1DxMarkii #Canon500 #Canon500F4