fixed, sorry!

]]>Hi Erik,

Sorry for not getting back to you sooner. I’m not getting notifications for this for some reason.

The backbone of Total Points is the calculation of Points Above Average, in which everything averages to zero. The translation from one to the other involves taking the average points per game (23 or so per team) and dividing that up each game among the players who played, so that instead of adding up to 0, Total Points adds up to (roughly) the league point total in a season.

So, for example, if there were 50 snaps in a game by one team, we would divide those 23 points by 50 x 11 (eleven guys to a side), which is roughly .04 points per play that would be given to each player on the field for each snap he played in that game.

The above is how it works for defensive players. However, because quarterbacks own an outsized portion of responsibility for their team’s performance, that calculation changes for the offense. The QB starts by taking 1/3 of the credit for each play (so, roughly .15 points per play), and then the rest of the play’s value is divided evenly among the remaining ten players.

There are a couple adjustments to handle special teams players differently (and also we trim off some points from the league scoring average because some points are special-teams-specific), but the larger portion of the calculation is what I say above.

I appreciate your interest in the stat!

]]>Teammate effects were not considered within this analysis. Pressure is actually more correlated with quarterbacks than offensive lines, which means they have more control over it. I would say by not adjusting for pressure, this analysis is actually more useful. This analysis suggests that on longer dropbacks more experienced quarterbacks perform better. This performance is not simply related to the actual throw, but also how fast they are able to make their progressions and get the ball out. Overall this boils down to more experienced quarterbacks getting the ball out quicker, which controls pressure and usually results in better performance. We would not be able to see the effect of this if we controlled for pressure.

]]>this was just a test by me (Erik) in order to figure out what works and what doesn’t and can be deleted.

]]>Lets assume the assignment of credit and overall calculation results in 300 points for a QB and 700 points for the rest of the offense (if thats realistic or not doesn’t matter to me, i just try and understand how the season scoring adjustment works). Let’s additionally assume that the season scoring was 100 points per offense. From what I understand, we should now adjust to the season scoring by dividing the calculated points by 10 and therefore adjusted it to the season. That means the result for the QB would be 30 points and 70 points for the rest of the offense, right? Now if we take the 0.33 adjustment for QBs into consideration that would mean that the QB actually ends up with 40 points and the rest of the offense with 60 points. I am pretty sure I got this wrong, but I can’t find another way to wrap my head around the 0.33 adjustment for QBs.

I would really appreciate it if this could be clarified. Thank you in advance.

-Erik

P.S.: I m sorry for writing so many different Comments and not everything in one, but the site somehow didn’t let me write everything in 1 comment.

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