The Canadian Open expressed disappointment over the withdrawals of Jannik Sinner and Novak Djokovic from next week’s tournament ⁠in Montreal, saying the recurring absence ⁠of top players from ATP 1000 events had become ⁠a broader issue for the sport. While end-of-season tournaments in Asia are regularly hit by players pulling out at the last minute, the high-profile absences at this stage are something of a surprise. Sinner withdrew on Friday to prioritise his health almost two weeks after...