In this week’s Sport: Rio Ferdinand gives us the straight talk on defending, racism and Sir Alex Ferguson’s switch | Welsh Centre Jamie Roberts on playing in Paris, Racing Metro’s European campaign and the future of Welsh rugby | Unbeaten Scottish UFC fighter Joanne Calderwood talks sparring with housemates and a world title bid in Las Vegas | We ask 16-year-old Brit Claudia Fragapane if she can build on four Commonwealth golds at the Artistic Gymnastics World Championships | Plus: a look ahead to this weekend’s action, including the Prix de l’Arc de Triomphe, the Japanese Grand Prix and England’s European Championships qualifier against San Marino at Wembley