In the week Dannil Medvedev claimed the world number one spot, we hear from the Russian, as well as the man he replaced, Novak Djokovic. We also get the views of Rafael Nadal, Andy Murray and former world number one, Jim Courier, plus we hear how Denis Shapovalov is getting on with his new coach, Jamie Delgado and we speak to a doubles player in a rich vein of form.