- 1998 Named Donnie Nelson as an assistant coach.
- 1998 Named scout Scott Roth as director of scouting.
- 2000 Mark Cuban reached an agreement with Ross Perot, Jr., to purchase a majority share of the team for $280 million.
- 2000 Gary Trent left the Denver game early in the 4th quarter with a strained left groin and Dirk Nowitzki left the game midway through the 4th with food poisoning (he was throwing up). Trent would miss the next six games due to the injury.
- 2001 Don Nelson underwent successful surgery for prostate cancer. The doctor said that it looks like the cancer had not spread and called the surgery "routine and successful". Nelson would remain in the hospital for the few days. He would then return to his off-season home in Maui while recovering. He would return to coaching on 2/20/01.
- 2001 The NBA fined Mark Cuban $250,000 for outbursts and actions concerning the refs following the Detroit game on 1/3/01. Cuban had a freeze frame of a missed goaltending call that would have tied the game with 12 seconds left placed on the JumboTron scoreboard after the game. It was then an NBA record fine for an individual.
- 2005 The NBA named Dirk Nowitzki and Dwyane Wade (Mia) as Players of the Month for December. Nowitzki averaged 27.2 points and nine rebounds as Dallas went 9-4. Wade averaged 23 points, 5.9 rebounds, and 7.7 assists as Miami went 14-1.
- 2007 Activated Jerry Stackhouse and placed Maurice Ager on IL. Stackhouse was on IL for 13 days (six games) later. Ager was activated 14 days (eight games) later.
- 2008 Activated Jose Barea and placed Erick Dampier on IL with a sore left knee. Barea was on IL for 21 days (10 games) (no injury). Dampier would activated five days (two games) later.
- 2011 Forward Caron Butler underwent surgery on his right patellar tendon after injuring it in a New Year's Day game against the Milwaukee Bucks. He would be out for the rest of the season.
- 2012 - Dirk Nowitzki played in his 1,000th career regular season game (975 starts) against Phoenix, becoming the 98th player in NBA history to accomplish that feat.
Special thanks to Patricia Bender and her Mavericks website (www.eskimo.com/~pbender/mavs.html) for assistance with this section.