Every coach has one. You can point to it with even the most successful of coaches. Some coaches are great tacticians (usually on one side of the ball or the other), but aren't good with personnel. Some are great at preparing their team, but not so good in game situations. Some are terrible clock managers. The knock on some guys is that they simply can't win the big one. And those are the
good coaches, bear in mind.
In the five years that I've watched Mike Tomlin, I wondered about his flaw and how it might manifest itself. After the Steelers shit the bed against a bad San Diego Chargers team at Heinz Field on Sunday, I realize what that flaw is -- his teams underperform against 'lesser' teams.
Call it an achilles heel or a blind spot, this seems to be an area where he struggles. Maybe he lacks a specific talent or an ability to see this as a problem. Whatever it is -- willfulness or simply a skill deficit -- this is more than a trend. It has become a very pronounced pattern.