Phil Mickelson, now 54, has enjoyed an extraordinary career with 57 professional victories, including 45 on the PGA Tour, which ties him for eighth all-time. He also has won six major championships. But in many ways, his decision to join LIV Golf may be the most significant pivot in his professional life.

The RBC Canadian Open marks a tough spot on the schedule as the PGA Tour’s only stop north of the border is sandwiched between the Memorial Tournament’s signature event and next week’s U.S. Open at Oakmont.