D. B. Sweeney plays the part of Doug Dorsey, a hockey player from the fictional town of Mayhorn, Minn., which is apparently supposed to be near Duluth. When Sweeney’s career is cut short, he goes back to Minnesota. It is unclear whether he is in Mayhorn or Duluth, but the radio station he listens to broadcasts out of Duluth.
This list of other films with Duluth references includes all of these …
… plus Sleepless in Seattle, Garden State, Leatherheads, The Big Year, Iron Will and probably a few more no one has mentioned yet.