The hardest part of previewing a position battle in a series between the Indiana Pacers and Boston Celtics is that Brad Stevens isn’t a fan of positional designations.
He calls it “positionless basketball”. His exact quote is this, from CelticsWire:
“We’re not playing in the day and age where we’re numbering all of the guys, what position they are. We’re gonna have all those guys out there at once, and hopefully be very versatile.”
Essentially, his sets/personnel are catered to the categories of guards, wings, and bigs. In theory, you could make these designations with every team, but the Pacers are more conventional with their positions 1-5.