Before getting injured, David Lee was what the doctor ordered for the Mavs.
Looking back
First he's in Golden State's starting lineup to open the 2014-2015 season. Then he gets hurt, giving rise to the beast we know as Draymond Green. Lee never won back his starting spot after he got hurt, and the rest is history. The Warriors won the title with Lee as a reserve, and traded him to the Boston Celtics after the end of last season.
Then, the Celtics bought out Lee in February and the Mavericks added him to the squad.