An exquisite performance from Jannik Sinner at the ATP Finals has ended Novak Djokovic’s 19-match winning streak dating back to Wimbledon but the trophy is still up for grabs — our Round Table experts discuss which players could join Daniil Medvedev in the last four, Leylah Fernandez is the talk of Canada again after the 2021 US Open finalist led her country to its first Billie Jean King Cup title, and tournament director Craig Tiley joins The AO Show to discuss the state of play less than two months out from the Australian Open.