![Christopher Taylor breaks Usain Bolt's 400M record at World Youth Championships 2015, Cali (COL) - YouTube Christopher Taylor breaks Usain Bolt's 400M record at World Youth Championships 2015, Cali (COL) - YouTube](https://i.ytimg.com/vi/ATgzJgrXuPg/hqdefault.jpg)
Christopher Taylor breaks Usain Bolt's 400M record at World Youth Championships 2015, Cali (COL) - YouTube
![Wayde van Niekerk sets new 400m world record and it's gold for Usain Bolt and Andy Murray - What you missed last night at Rio 2016 Wayde van Niekerk sets new 400m world record and it's gold for Usain Bolt and Andy Murray - What you missed last night at Rio 2016](https://www.telegraph.co.uk/content/dam/sport/2016/08/15/105841628-Bolt_winning_gold-SPORT_trans_NvBQzQNjv4BqjmpNrzJ7bQ_M5ql9FqM8zg8pFnagAdV9PX4GGZogPvM.jpg?imwidth=480)
Wayde van Niekerk sets new 400m world record and it's gold for Usain Bolt and Andy Murray - What you missed last night at Rio 2016
![Unique' Usain Bolt challenges 400m record breaker Wayde van Niekerk to 300m showdown | Daily Mail Online Unique' Usain Bolt challenges 400m record breaker Wayde van Niekerk to 300m showdown | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2016/08/16/00/3745EDE900000578-3742287-image-a-1_1471305496787.jpg)
Unique' Usain Bolt challenges 400m record breaker Wayde van Niekerk to 300m showdown | Daily Mail Online
![South Africa's Wayde Van Niekerk winner in Men's 400m breaking a new World record and Jamaica's Usain Bolt winner in Men's 100m during the Olympic Games RIO 2016, Athletics, on August 14, South Africa's Wayde Van Niekerk winner in Men's 400m breaking a new World record and Jamaica's Usain Bolt winner in Men's 100m during the Olympic Games RIO 2016, Athletics, on August 14,](https://c8.alamy.com/comp/2F21BNB/south-africas-wayde-van-niekerk-winner-in-mens-400m-breaking-a-new-world-record-and-jamaicas-usain-bolt-winner-in-mens-100m-during-the-olympic-games-rio-2016-athletics-on-august-14-2016-in-rio-brazil-photo-jean-marie-hervio-kmsp-dppi-2F21BNB.jpg)