The NBA preseason is less than one month away, with exhibition games set to take place from Dec. 11-19, The Athletic reported Saturday. The regular season already was slated to begin on Dec. 22, just in time to allow the league to contest a full slate of Christmas Day games. The 2020-21 regular-season schedule has yet to be released. According to the report, teams will have the option of playing three or four preseason games. All teams will have to play at least one preseason game in their home arena