I don't think I'm going to touch the Heat vs Celtics game, but I like home teams in the other two games.
Lakers x Trailblazers @ 1.71 (2 units)
Trailblazers over 104 (3 units) Now this one really looks too easy to be true, which is why I had to control myself and only take 3 units. The Nuggets bench dropped 140 on the Suns in the last preseason game, 104 for the Trailblazers starters should be easy.
Got a bit lucky with both, and I needed some luck considering the day of tennis betting I had.