Wimbledon champion Novak Djokovic will start his 2018 US Open Series campaign at the Rogers Cup presented by National Bank, an ATP World Tour Masters 1000 tournament in Toronto (August 6-12). The official draw will take place on Friday, August 3. The four-time Canada Open titlist (2007, 2011, 2012, 2016) missed last year’s edition due to elbow injury.