In this week's show six top athletes talk about the impact of their faith on their sport and lives. Four of them were recently crowned world champions at the World Athletics Championships in Beijing - Jamaica's Shelly-Ann Fraser-Pryce in the women's 100m, US triple jumper Christian Taylor and the winners of the men's and women's 400m, South Africa's Wayde van Niekerk and the USA's Allyson Felix. We also hear from bronze medallist in the men's 110m hurdles Aries Merritt and South Africa's Wenda Nel who reached the final of the women's 400m hurdles.