There are good coaches and then there are great coaches. On the other spectrum, there are bad coaches and then you have horrible coaches. This is a list of the NFL’s 10 most horrible coaches. Or NFL’s Top 10 Worse coaches.

What makes a bad coach?

To answer that question – we first have to answer the question; who is a good coach.

NFL coaches like every other coach in professional sports are evaluated on three very important intangibles: 1, supreme knowledge of the game, 2, ability to evaluate, nurture and maximize player’s talent and 3, be a leader of men.

To be a good head coach in any top level professional sports in world, one must possess at least two of the above intangibles. To be a great head coach, they must have all three.

The NFL is a league made of teams with almost equal talent pool, so on any given Sunday any team can pull of a victory regardless of previous record. The difference then in wins and loses is thus dependent on the ability of a coach to out maneuver his opponent across the field and his players willingness to run through a brick wall for him.

Take the San Francisco 49ERs under Mike Singletary they looked like a team in search of an identity and could not find a path to success. A year later with almost the same personnel on the field, Jim Harbaugh won 13 games and was a game away from playing in the super-bowl.

Now that you know what makes a good head coach, here are the NFL’s Top 10 Worse Coaches of the 2012-13 season. Click the next button above to begin.