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David Harris's avatar

Some questions for you and a stray thought or opinion here and there, if you have the time.

Could you please explain your selection of defining the bad quarterbacks in terms of CPOE and not EPA? Not that the lists would diverge that much, but I'm curious. Is EPA looked upon as the bottom line, but CPA more predictive?

So, I get confused. What variables does the probability of completion for a pass incorporate? Distance downfield, plus lateral distance? Whether the quarterback is on the run or not? Does it take into account the distance between the receiver and the defender at the time the ball is thrown?

One advantage of EPA, in terms of measuring a quarterback's worth, it would seem to me, is it rewards how much a quarterback sees, and where he chooses to throw the ball, not just how well he does when he does throw the ball. EPA implicitly penalizes for omissions (or, I suppose, compares to an average rate of omission).

If CPOE does take in more than just how far downfield the pass is, I can see that it might yield some interesting results, in that a pass could have limited potential reward, but show up as just as skilled a play as one that went well downfield. Not because the throw downfield was one that the quarterback should have completed (although that could be true, too, if it were a blown coverage), but because the short throw vertically still covered a lot of distance, or was to a closely covered guy. This is sort of the equivalent of when the announcer says, "That was the best two-yard run I ever saw," which is sometimes a reasonable statement. There can be skill in short plays, and things we can glean from them. So, maybe that's why CPOE is more predictive than EPA, if it is.

I hadn't focused on just how many of our top quarterbacks received limiting playing time their rookie year. I do find that hard to combat, as an argument that sitting on the bench isn't hurting young quarterbacks, and may even be helping them.

I like Justin Fields' talent, but my first reaction is I don't agree with your logic in saying the Bears should have stayed with him. Why is everything about 2024? Would they have won the Super Bowl with Fields? Don't Luck, Goff, Stafford, and Burrow indicate that there is longitudinal progress with quarterbacks, and Williams could well turn out to be a better player than Fields, even though his first two weeks have been rocky? And I know about Bryce Young and Zach Wilson and Trey Lance, but I think it just stands to reason that the higher you're picked in the first round, the more likely you are to succeed. It might not be true, but it probably is, and if that hasn't turned out over a period of years, it probably only means that we haven't had sufficient sample size to see the opposite, although the effect is probably weak.

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