As reigning Olympic 400 metres champion Sanya Richards-Ross announces her retirement we pay tribute to her remarkable career. Journalist Stuart Weir provides some insights from his meetings with her over the years and we hear from Sanya herself as she recalls her Olympic triumph in 2012 in London and reflects on the faith which has sustained her through success and disappointment. And we continue our journey through the Games of the modern Olympic era as we look back on some of the highlights of the 2000 Games in Sydney.