As the team begins the Indiana state tourney (always held in March) the team bus is shown driving by fields of corn. No corn in Indiana at this time of year. The crop is harvested before the season starts.
Near the end of the film in the locker room prior to the championship game, Coach Dale makes reference to the players on the other team whose names are written on a chalkboard. If you look closely at the list of names, you'll see that they are the last names of the actors that portray the Hickory players (Poole, Schenk, Boyle, etc).