The following world records have recently been ratified…
World U20 record
Men’s javelin: 86.48m Neeraj Chopra (IND) Bydgoszcz 23 Jul 2016
Previous: 84.69m Zigismunds Sirmais (LAT) Bauska 22 Jun 2011
World records
Women’s 100m hurdles: 12.20 (0.3m/s) Kendra Harrison (USA) London 22 Jul 2016
Previous: 12.21 (0.7m/s) Yordanka Donkova (BUL) Stara Zagora 20 Aug 1988
Women’s 10,000m: 29:17.45 Almaz Ayana (ETH) Rio de Janeiro 12 Aug 2016
Previous: 29:31.78 Wang Junxia (CHN) Beijing 8 Sep 1993
Men’s 400m: 43.03 Wayde van Niekerk (RSA) Rio de Janeiro 14 Aug 2016
Previous: 43.18 Michael Johnson (USA) Seville 26 Aug 1999
Women’s hammer: 82.29m Anita Wlodarczyk (POL) Rio de Janeiro 15 Aug 2016
Previous: 81.08m Anita Wlodarczyk (POL) Cetniewo 1 Aug 2015
