Jannik Sinner, Carlos Alcaraz, and Novak Djokovic—out of action this week, Toronto was always going to offer players from the second-tier a chance at a top-tier title. But it wasn’t going to be easy.

In an exhilarating Canadian Open, a new name will be etched onto the trophy as Ben Shelton and Karen Khachanov eye up Toronto glory, as they prepare to battle it out for a prestigious Masters 1000 ...