What happened: Miami opens its preseason against Toronto in Québec City. NBA TV carries the matchup as the league's exhibition slate gets underway.

Why it matters: The opener gives both clubs a first live read on rotations and conditioning before the rest of preseason play. It also returns NBA action to Québec City after the matchup was announced as part of the preseason schedule.

What to watch: Watch for how quickly each side settles into preseason rotations once play begins. The opener starts the evaluation window for both teams heading into the rest of camp.