Dustin Johnson atop betting lines at the Canadian Open

Dustin Johnson is the betting favorite over Brooks Koepka on the odds to win the RBC Canadian Open at sportsbooks for the second straight year. Dustin Johnson won the RBC Canadian Open by three strokes in 2018 with a dominant 23-under-par performance. Johnson will try to follow up that victory with another one this week at the Hamilton Golf & Country Club. The defending champion is a +600 betting favorite to win in Ancaster at sportsbooks monitored by OddsShark.com. Before winning the Canadian O...