- 1980 Released Bingo Smith and Raymond Townsend.
- 1991 Signed second round draft pick Mike Iuzzolino to a two-year contract.
- 1997 The city of Dallas, the Dallas Mavericks, and the Dallas Stars reached an agreement on a new arena. The city council voted on the agreement five days later.
- 2003 Dallas released Rod Gregoire.
- 2004 New Jersey signed Dallas free agent Travis Best to a one-year, partially guaranteed contract. Best was not part of Dallas' 04-05 plans.
- 2005 Signed Erick Strickland, Samo Udrih, and Kaniel Dickens for training camp. None would make the 05-06 roster.
- 2007 Devean George had a stress reaction in his left foot would miss all of preseason. He would appear in his first game of the season on December 6, 2007.
- 2012 After a week of training in Dallas, the team departs for two preseason games in Berlin, Germany and Barcelona, Spain.
Special thanks to Patricia Bender and her Mavericks website (www.eskimo.com/~pbender/mavs.html) for assistance with this section.