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Eric Stoner: How I Grade Quarterback Play

Photo by Al Case.
Photo by Al Case.

If you feel like you have no idea where to start when trying to project a quarterback, this will get you going.

Written by Eric Stoner

Matt’s Note: Eric submitted a 10-page analysis of Marcus Mariota, which includes this section below on how he grades quarterback play. As he suggested, the article could be broken into two parts: How to develop a grading scale that makes sense and his breakdown of Mariota and the layers of context that everyone must sift through when trying analyze a passer.  This is what I’ve done. The Mariota analysis will be out later this week. 

When I heard Dan’s Hatman’s description of “trait-based scouting” on the Process the Process podcast, it reminded me a lot of the grading scale Andrew Parsons and I co-developed when creating the Draft Mecca website. We knew that until we actually sat down and listed all of the projectable traits each position shows and weighing the importance of each trait, we would forever be chasing flashes and potentially overvaluing or over-correcting based on a few good or bad plays.

Think of a grading scale like a Madden rating. In Madden’s rating formula, coefficients like “Speed” and “Awareness” correlate to a player’s overall rating. The higher you raise a player’s “Speed” rating, the higher his overall rating becomes and vice versa – and this is universal across almost all positions. However, each position differs in how much the coefficients affect the rating. For instance, raising an offensive guard’s Speed to 99 doesn’t have the same affect as raising a running back’s Speed to 99.

What we did was list all the specific and projectable traits each position has – essentially, determining “what” we were looking for in each position. We then assigned weighted values to each trait. We then assigned weighted values to each trait and it’s sub-categories. Some things are more important than others. Moreso than simply spitting out a numerical grade, it allowed us to see a players’ playing style in totality.

Dan’s wide receiver example in the podcast is a perfect illustration – you might have three wide receivers with the same level of “goodness” in a vacuum, but they succeed and fail in vastly different areas. Visualize a player’s skill set like a Mockdraftable web: the more spikes a player has, the more projectable traits and integrated skills he has. However, you don’t need a full web for a prospect to be good. You mainly just need to see some spikes in important areas.

Long story short, this is a breakdown of the traits that matter to me when scouting quarterbacks. The bold-underlined portions are the major categories. Each one has sub-categories (and some of those have sub-categories as well). Again, if you put together a formula of how to weight each of these traits, you can alter how much each one affects the total overall grade. If something is italicized, it means it’s the most important part of that category (for example, Pocket Comfort is the most important of the major categories. It will have the highest impact on the overall grade, and Eye-Level carries the most weight of the sub-categories inside of the Pocket Comfort.)

Precision

 Arm

 Pocket Comfort

Bridgewater’s game has a lot of subtleties, including is pocket movement. Photo by Kyle Engman.

 Polish

Mobility

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 Winston vs. Mariota and Simple vs. Difficult Evaluation Processes

Winston is a straightfoward evaluation.

Even with a set of clearly defined and traits to look for and a system in which to filter their importance, quarterback scouting can still be really, really hard. That largely has to do with sample size and the amount of useable plays a quarterback has per game. I’ve said often that the NFL likes Jameis Winston because he’s a straightforward evaluation.

Every game he’s in has exposure after exposure of him showing these things – whether he shows these things in a good or bad way becomes almost secondary. The lack of nuance required to actually see the traits elevates him almost on principle, and that’s largely due to the style of offense that Florida State plays. I’ve never been a fan of the term “pro style” when describing a college offense, preferring to call them “traditional” offenses.

His offense plays at a normal pace, he takes drops from under center, and he’s not a threat as a runner. In turn, defenses respond by playing Florida State in a more traditional manner. You get more man coverage and confusing pre-snap defensive looks, tighter windows to throw into, more compressed pockets for the quarterback to navigate, etc.

Marcus Mariota sits on the other end of the spectrum. The way they play offense (and, in turn, the way defenses respond to their offense) vastly limits the amount of usable snaps per game you get from Mariota. He’s asked to make some “traditional offense” reads and throws (it’s not like their pass offense is just a million screens over and over), but the way that defenses play Oregon makes things incredibly easy on the quarterback.

Oregon’s offense is actually very easy to figure out from a theoretical standpoint. They want to use their no-huddle pace and spread formations to get the defense to declare their intentions pre-snap. Spread formations and the hurry-up tempo prevent the defense from clustering or disguising their coverages pre-snap (and the coverages tend to predominantly be zone as opposed to man).

When the defense goes into a two-high safety look, Oregon wants to run it (or combine play-action with Quarters/Cover Two beaters). Against one-high safety looks, they’re looking to combo their run game with horizontal stretches or screens in the short areas of the field (or they’ll run Four Verticals when they feel like taking a shot play). Again, a lot of these pass concepts are “traditional,” but often times Oregon is getting the perfect play-call in against a clearly defined coverage/front.

This doesn’t necessarily make Mariota a worse prospect; it makes him a tougher evaluation. You just have to search harder to find plays that display projectable traits, and because you’re dealing with such a smaller sample of usable plays, the answers can be inconclusive or even contradictory.

Stay tuned for Stoner’s analysis of Marcus Mariota. 

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