Why Trevon Diggs' PFF Grade Doesn't Reflect His Interception Total

Beaker42

Beaker42

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thunderpimp91 said:
His PFF grade really isnt that difficult to understand. Looking only at his coverage grade he is rated as top 3rd of the league. It's mostly his grade against the run (30.9) that brings down his overall grade so much.

Being a #30-40 type cover guy with off the chart ball skills and poor against the run is very fair to Diggs season.

I will say I've noticed he has taken his cover game up a notch the past few games, but he certainly has been vulnerable at times as well.

Just looking at where Diggs ranks overall with PFF doesnt tell the whole story. Plus we need to keep in mind that Diggs is a unique player, while PFF is a simple scoring system. You will have outliers that dont fit well inside the PFF box. They seem to get it right more often than not, but this is just one tool for us to use.
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Wait - giving up the most yards of any CB (968) puts him in the top 3rd of cover guys?? Got it.
 
thunderpimp91

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Beaker42 said:
Wait - giving up the most yards of any CB (968) puts him in the top 3rd of cover guys?? Got it.
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PFF uses a simple +/- scoring system. Giving up an 80 yard bomb or a 10 yard slant is a similar score. Its why he doesnt get a huge bump because of his INTs, so that goes both ways. It's how they grade so many plays so quick.

But yes, I dont think its unreasonable to think of Diggs as a top 30-40 cover corner in the league today. If not you're giving way too much credit to other CBs. Very tough to play the position in 2021.
 
MountaineerCowboy

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buybuydandavis said:
Their analysis is totally reasonable. It may be wrong, but it's reasonable.

Diggs gives you a tradeoff of picks vs. lots of passing yardage given up and poor run defense. I've noticed him avoiding contact often.

They've actually done the math on "Wins Above Replacement Value". Maybe their math is wrong. But most people criticizing their evaluation haven't even *considered the concept* of "Wins Above Replacement Value", let alone tried to make a calculation of their own.

From what they say, they may have a problem with their methodology. Seems like they want to dismiss some of the INTs as easy or lucky. Maybe they were. But dismissing such plays is inconsistent with a data driven WARW approach. And being *in position* to make the easy play is most of the trick, and as we've seen over the years, those "easy picks" just aren't that easy for all professional players to catch. And are they similarly dismissing getting beat by a well thrown ball? And getting them to throw at you is much of the trick to getting INTs. It's a tradeoff.

Life is full of tradeoffs. Diggs presents an interesting case study in player evaluation. Most INTs, Most Yardage. What's really the value tradeoff? I don't know. And neither do you.
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I appreciate the great responds instead of insulting me for posting an article as if I was the person that wrote said article lol
 
Typhus

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CATCH17 said:
I just don’t come away from a lot of games seeing Diggs coverage as an issue.

Im actually surprised he evidently gives up the yards he does all things considered.
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He got picked on because the man is a pick artist.
What teams are just trying to finally respect is that Diggs runs most routes just as good as if not better than his opposing WR that he is defending.
He can and will get burned, but I give a "playmaker" that right to pick and choose at his discretion.
And its addictive, now we start seeing others in the backfield taking Digss lead and actually turning around to the QB while in coverage,, that defines a leader.
Diggs is a captain for this back 7
 
Beaker42

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thunderpimp91 said:
PFF uses a simple +/- scoring system. Giving up an 80 yard bomb or a 10 yard slant is a similar score. Its why he doesnt get a huge bump because of his INTs, so that goes both ways. It's how they grade so many plays so quick.

But yes, I dont think its unreasonable to think of Diggs as a top 30-40 cover corner in the league today. If not you're giving way too much credit to other CBs. Very tough to play the position in 2021.
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That to me proves he’s in the bottom third, not the top.
 
Typhus

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CowboysRule said:
I wonder how many of the yards he gives up is because we don't have a decent safety to help him out over the top. Like, I'm sure they blamed him for the long pass against the Patriots but it wouldn't have happened if Kazee was a better player.
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You will learn to love and respect the talent and depth we have at safety
 
plasticman

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Hmmm...

Would I rather have Diggs shut down a particular receiver so the quarterback is forced to throw elsewhere.......?

Or would I rather the quarterback get lulled into a false sense of security to where he throws a game changing INT that sparks the entire Cowboys team......?

What sparked the team last week? At what point in the game did they get inspired?

I read an interesting article that evaluates the points value of a turnover. The average value for an INT is 4 points. in other words, an INT will lead your team to score an additional 4 points. Eleven INT's is a little over seven TD's.

Diggs will continue to improve. In the meantime, I'll take the bad with the fantastic.
 
charron

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Without the interceptions diggs would atleast be in the bottom half of CB's. But 11 interceptions is no fluke. So imho they must be factored into his play. Overall he's much better than their grade, not the best because he gives up way too many yards but pretty dam good.
 
jaythecowboy

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MountaineerCowboy said:
I don't believe Diggs INTs are "meaningless".

I believe people think the Cowboys defense is dangerous and Diggs is a part of that.

Also, I believe PFF would grade Diggs the same no matter what team he is on.
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PFF would grade him the same but there wouldn't be so many people using it to downplay Diggs. I've heard people say Diggs isn't even a starting caliber corner.
 
SultanOfSix

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Strange.

Would a similar thing be said of a DL-man who had 20 sacks with two games to go?
 
thunderpimp91

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SultanOfSix said:
Strange.

Would a similar thing be said of a DL-man who had 20 sacks with two games to go?
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Could absolutely happen. It's not to the same extreme as Diggs, however Trey Hendrickson has 16 sacks on the year and falls outside of the top 30 in PFFs EDGE player rankings. Reason why is he has a pass rush grade of 84, but a run defense grade of just 46.
 
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