Flawless Novak Djokovic swats aside Matteo Berrettini in ATP Finals

• Serb takes little more than an hour to see off Italian 6-2, 6-1• Roger Federer faces Dominic Thiem on Sunday evening The last time we saw Novak Djokovic in London he was wearing down Roger Federer in the longest final in Wimbledon's history. On Sunday he returned and spent a mere 62 minutes opening his campaign to finish the season as the world No 1 for the sixth time. Less than 24 hours after Matteo Berrettini's teenage compatriot, Jannik Sinner, edged closer to the game's significant lim...