Kseniya Ryzhova (RUS) 50.69Q Novlene Williams-Mills (JAM) 50.83Q 400m heat 4 IAAF World Championships 2013

1 Kseniya Ryzhova RUSSIA RUS 50.69 Q 0.218
2 Novlene Williams-Mills JAMAICA JAM 50.83 Q 0.324
3 Nataliia Pygyda UKRAINE UKR 51.17 Q SB 0.162
4 Bianca Razor ROMANIA ROU 51.51 Q PB 0.268
5 Tjipekapora Herunga NAMIBIA NAM 52.01 q SB 0.230
6 Chiara Bazzoni ITALY ITA 52.14 q 0.197
7 Esther Cremer GERMANY GER 52.17 q 0.168
14th IAAF World Championships RUSSIA Moskva (Luzhniki), RUSSIA 10 AUG 2013 – 18 AUG 2013