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Newbie · 01-08-2015, 06:55 PM

Below is the link to the explanation of how PFF grades. It is waaaaaay to long to try to cut and paste.

http://www.profootballfocus.com/about/grading/

What I will cut and paste is a key piece.

How We Grade

There are two main processes that are used to come up with the grades: player participation and the actual grading process. Player participation is more black and white as it consists of which players are on the field, where and general information about the actions they performed (rush the passer, drop into coverage, stay in to pass block, etc).

This process is performed by two separate analysts on two separate spreadsheets. Each spreadsheet is then compared and any discrepancies are reviewed by a third analyst in order to ensure near-100 percent accuracy. We’ve found that both blind runs are generally at least 99.7% accurate and once the games are checked, we’re confident that our work is very close to 100% by mid-week (actually stands at 99.98%).

As for the grading process, it starts as soon as a game is completed. Each play consists of two basic sections, one for the grading and one for stat collection, which would include detail such as (but by no means limited to) which gap the run goes through or which route was thrown on a pass.

The grading for each game passes through three individuals (two who grade every player on every play) to ensure that the grading and stat collection is thoroughly checked and critiqued. This ensures that both our procedures and the interpretation of each play is rigorously checked and consistently applied.

Using All-22

While we feel strongly about our ability to grade games based on the broadcast footage, the All-22 has been an invaluable addition to our processes. The original analyst is instructed to flag any plays from the broadcast footage that need more information or a better view from the coach’s film. The second and third analysts are then able to pinpoint these plays along with others to get a clearer, more decisive look at every play. The use of All-22 has also allowed us to expand our analysis of special teams plays into greater depth and breadth than is possible from broadcast footage.