SALT LAKE CITY — Ben Affleck was 12 years old in 1984 and growing up in the Boston area. The Celtics were NBA champions. The Red Sox and Patriots were respectable. The Bruins got swept in the first round of the playoffs.

And that also was when Nike was betting much of its future on Michael Jordan.

Part of that tale will be told in the upcoming film “Air,” which Affleck directed and stars in alongside Matt Damon, Viola Davis, Jason Bateman and more. …