We are tackling listener questions little by little; you've given us so many great ones that we will have to space them out. But first, we try to provide some context into Serena Williams' repeated statements about doping tests: we look at the structure of the anti-doping system in tennis, Therapeutic Use Exemptions, and the uphill battle to arm everyone with comprehensive knowledge on the system. We also talk Andy Murray's emotional return, Kuznetsova and Vekic's accidental profundity, and Serena's no good very bad day at the office.

0:30 Like Alyssa Edwards and Andy Murray we're back back back again