In the 2026-27 season, the rosters of four NBA championship contenders look very strong, but each team still has a clear weakness that could come back to hurt them in the playoffs.
Weaknesses will be exposed in the playoffs

The article states that although these four teams are considered strong overall, each still has a key issue. These problems may not be obvious during the regular season, but as playoff competition intensifies, opponents could identify and repeatedly target them.
The championship window is limited
If these weaknesses cannot be addressed before the crucial stages, the teams' playoff prospects could be affected. For championship contenders, one obvious flaw can sometimes be enough to change the direction of an entire series.