Well it's a ballpark thing obviously, because for it to be an exact scientific number I would have to analyze every single play for every single player and the resulting activity would be ridiculously time consuming even if I had the video materials I would need to do that, which I don't.
So for example, I place blame on a player if he makes an obvious mistake that is not something the coaches can be expected to be accountable for. Like take Stefan Logan's fumble. You can't put that on the coaches when he can't even line up to the ball correctly and then he clumsily kicks it when trying to recover, that's clearly a player mistake and something that I expect better from Logan or any pro return man.
But I also don't hold players to accountable beyond their expectations. So for example, i don't place a lot of blame on Shaun Hill because he hasn't been great, because he isn't a great player, I don't expect him to be Peyton Manning. So for what I expect out of him, he produces right around what he is worth as a player. If his name was Peyton Manning and he played the exact same way, then i would say that's his fault for playing well below his ability and expectation level for him. You could put me in at LT for the team, but then you can't blame me for not blocking Julius Peppers unless I dog it for myself on any given play. But as long as I do my personal best, then I am exempt from being at fault, as I'm doing the best I can to my ability if I'm technically doing it theoretically the right way. It's then the blame of Mayhew for having chosen to have me on the team despite I'm playing at par for myself and my skill/talent level.
So it's a totality of determining how often the players are complete numskulls and just make what would be the equivalent of an "error" as it is recorded in baseball. But if a player has say a 6.0 40 yard dash and cant' even reach a groundball that makes it into the outfield, well that's not his fault, he coudn't possibly have made it, and then it's the fault of the manager for having a super slow person playing on his team.
And since I can't be there to know what our coaches are telling the players, it becomes a judgment call when a DB blows a play. Is it because the DB is terrible and doesn't know what to do or isn't good enough to do it, or is he doing what he is instructed to do and getting exploited? You can't possibly know all of that stuff with certainty so I have to guess at it and determine is that the player making a bad choice, or is he following bad programming. And from how our players appear to me, I see the vast majority of the time it looks like a programming error and not a player decision or ability error. And when I watch this next game, I might adjust that attitude. If our entire defensive scheming or programming is completely different, and then the player somehow still gets out of position, well then I can chalk that up to saying that our coaches are on the right track but the player missed the play or the execution, and thus the shift of blame goes from coaches to players.
Or here's another example, late in that last game AP had a running play and failed to get out of bounds for some stupid reason when the yards had no value to the team, only extracting timeouts was the goal, so that play the great Adrian Peterson was responsible and the clock mngmt error there would have been his fault and not a coaching fault. Or like how LJ missed Vick on that wide open sack opportunity, a coach has to teach a guy to make that hit right, but on that play I can't excuse the player at all and have to assume that's his error and not a coaching error as that is the intuitive guess. Or if Pettigrew drops a ball he should have caught, that's one strike to him, not the coaches. Just trying to give you other examples for some other positions.
And then I also account for severity. Like if our DB coaches are clearly not instructing players correctly and we get gashed bigtime in the passing game due to obvious exploits, well one bad play could have multiple players being coached wrong on that play and the coaches could get say 3 errors on one play despite 0 errors for the players on one play, and those errors are bigtime value errors and I adjust for that. And then you have ST errors like how to strategize for a bouncing ball that is approaching the endzone, they always screw that up and sometimes its clear that the player could simply wait and pick it up last second, but sometimes its clear that our guys are not programmed to go to the 1 yard line and play a side straddle defense to wait for the ball to come to them, that's a coaching error in that case.
So based upon quantity and severity of coaching errors verse player errors, I see the absurdity and damage of the coaching neglect to be worth about 92% of the team's global problems and responsibility for those problems. If I was the owner or GM of a team, I would feel the maximum tolerance I would allow for the coaches screwing up the team to be about 5%, because nobody is perfect and to be perfect without errors in a tough complex game like football is extremely difficult to do even with the greatest of football minds working together, so I anticipate how many mistakes I would make if I was doing the job, and I can see where and how I would go wrong and I would be upset with myself if I scored myself and my coaching staff selected to be worth more than 5% of the problem. I believe you should never ever let your team suffer on account of the behind the scenes stuff, that part is easy and there's no excuse for screwing up, but when you have the right players in place and they are instructed and supported logically the best you possibly can do, then if they get beat it will be because you just came up short on the field with playing talent and skill. It's just an unconscionable thing to me to have the sideline and booth people screwing up the game, but since nobody is perfect I can tolerate like I said maybe 5% of mental error, but even that is a stretch and should be and could be improved upon over time, but that takes on the job experience which there is no substitute for.