Ok, so, the way I view these 2 things is one is yards a receiver gets after catching the ball, that one is obvious, the 2nd is yards the ball travels through the air, no?
This says that Brady and Brees have over 6100 yards. Either I'm reading these very wrong, or one of the two stats is incredibly far off. Maybe even both. I'm going to say the "total air yards" is off by a mile.
One is yards after catch and one is air yards
according to advancedstats.com. I believed they already include a certain percentage of yards after catch into the QB's air yards number. You will have to read their description of it.
I believe they use a league average for screen passes that would normally result in negative yardage when it comes to air yards. They took it a step further than just raw positive air yards because of so many teams that rely on screen passes. Just like QB's shouldn't be credited with all the yards after catch, they should not be punished for
designed screen passes. Those guys are pretty good about stats and football logic at least when it comes to a couple of the stats they track that I looked into.
If you wanted pure net air yards estimate then this would be a half ass way to estimated it.
Total passing yards
1 Drew Brees 4,780
2 Tom Brady 4,593
3 Eli Manning 4,362
4 Aaron Rodgers 4,360
5 Matthew Stafford 4,145
minus
Team total yards after catch
1 New England Patriots 2340
2 New Orleans Saints 2295
3 Detroit Lions 2086
4 Green Bay Packers 2054
5 NY Giants 1842
= estimated net air yards:
1 Eli Manning 2520
2 Drew Brees 2485
3 Aaron Rodgers 2306
4 Tom Brady 2253
5 Detroit Lions 2059
* the problem is we're subtracting
team yards after catch which is only good for estimating full season starters, doesn't account for non-QB passes or back-ups, and as explained above, will punish QB's who throw designed screen passes. Nobody really tracks pure net air yards for the quarterbacks that I know of. And of course you still have the attempts problem. Which is why efficiency stats are better. It at least accounts for that part.
net air yards avg per attempt
1 Aaron Rodgers 2306 yards/ 473 attempts = 4.9 ypa
2 Eli Manning 2520 yards / 529 = 4.8 ypa
3 Drew Brees 2485 yards / 583 =
4.3 ypa
4 Tom Brady 2253 yards /530 attempts =
4.3 ypa
5 Mathew Stafford 2059 yards / 568 attempts = 3.6 ypa
Note I'm only re-ranking the top 5 in passing yards listed above so there may be a QB that's falling through the cracks but we're mainly interested in Brees/Brady. If you look at air yards alone there might be some QB's that are not in the top 5 in total passing.
But once again, this method penalizes guys who throw a lot of designed screen passes in their ypa, which is why I actually kind of like advancedstats air passing numbers. I think they got it right by crediting QB with a certain league average % and fixes the issue. I'm pretty sure that's how they do it, and by using league average instead of their own receiver's % they also fix the issue with QB's who get a lot of help from elite rushers in yac. Pretty cool. Although I don't expect the NFL to start doing this any time soon. It's too fair.
which is why advancedstats air ypa is closer to reality:
air yards per attempt %(avg):
1-A.Rodgers 7.6
2-T.Brady 7.2
3-M.Schaub 6.9
4-D.Brees 6.8
5-T.Romo 6.4
Rodgers is still king but Eli doesn't make the cut. Either because he's inefficient, can't sell a screen, or because the Giants suck in screen passes. One or more of those. Neither does Stafford.