Every NBA team has an Achilles' heel, even if it's sometimes difficult to find. Of course, it's often even more difficult to take advantage of that underlying weakness.
It's impossible for an NBA team to be perfect. That should be quite clear from the fact that no team in the history of the Association has ever gone undefeated—or swept through the postseason without a blemish, for that matter.
Each squad has an area that needs improvement.
Note: All stats, unless otherwise indicated, come from ESPN and Basketball-Reference and are current through Jan. 10.