One key thing coach's evaluations do tell us

[FootballRef05]

For the most part I don't find much value in coaches rating my performance on the field. I would say in my experience 99% of the coached I talk to have not picked up a rule book in years, if ever. This is apparent by some of the questions you get on the field and that we see here, 'Reporting as Eligible, Uncatchable pass, Outside the tackle box, play to the whistle and so on. It's a simple fact that coaches do not understand the rules; like fans they know what they see on Sunday. I asked a coach one time if he would let me call the next offensive series and he could officiate for me. I know as much about coaching as he does about officiating.

We make mistakes on the field, we're human. However we are easy targets for coaches to make excuses for themself for their teams poor performance.