The Miami Heat enter the 2013-14 season looking for their straight NBA title, a feat that only five other teams in history have accomplished. In fact, three weeks ago I looked at how the Heat might end up ranking among those dynasties.
On the flip side, there have been six teams that tried and failed to achieve a three-peat:
What is the common thread that ties these failed three-peat attempts together? Roster inertia. As you'll see below, none of these teams made a significant offseason addition, which isn't that surprising when you consider that they were coming off of back-to-back championship seasons.