Australian Open champions Aryna Sabalenka and Jannik Sinner at the draw ceremony. —AFP/FileMELBOURNE: World number one Jannik Sinner was drawn Thursday against big-hitting Nicolas Jarry to start his Australian Open defence while Novak Djokovic is on a collision course to meet Carlos Alcaraz in the quarter-finals.Italy´s Sinner defeated Russia´s Daniil Medvedev in last year´s final in Melbourne to secure his first major and went on to add the US Open and ATP Finals crowns to his...