Novak Djokovic shows his class with heartwarming Fernando Verdasco retirement gesture - Novak Djokovic raises concerns with blunt statement after first-round Doha loss - Jannik Sinner doping case: Novak Djokovic cries 'favoritism' as world No. 1 serves three-month suspension - Novak Djokovic says majority of tennis pros believe 'favoritism' is responsible Jannik Sinner's short ban - Andy Murray to continue coaching Novak Djokovic with Wimbledon a possibility - Novak Djokovic calls for overhaul of tennis anti-doping system - Novak Djokovic laments 'favouritism' towards Jannik Sinner over doping ban - Novak Djokovic criticises 'favouritism' in Jannik Sinner doping case after 'strange' punishment - Novak Djokovic breaks silence on Jannik Sinner punishment that he 'finds strange' - Novak Djokovic extends career of tennis icon after generous retirement gesture