Living on an Island
Cornerback is one of the most impactful positions on a football field. A great one can eliminate the opponent's best receiving weapon and a bad one is a liability that can throw the entire defense into chaos.
Continuing where we left off last week (https://boombearfootball.blogspot.com/2020/10/nfl-cornerback-performance-thru-week-4.html), let's look at cornerback performance based on the following Z scores:
- Attack Ratio: Average of Passes Defended/(Passes Defended+Completions Allowed) and Total Targets/Total Snaps
- Bleed Ratio: Total Yards Against/Total Snaps
- Burn Ratio: (Total Interceptions/Total Snaps) minus (Total Touchdowns/Total Snaps)
The player data is aggregated on a team basis so we can see how the individual performances impact the team as a whole.
Let's look at player performance through Week 6.
(Note: The cutoff for qualifying was 176 snaps.)
Player Performance
Attack Ratio - Who's Hot?
The players above above all CBs in Attack Z and for good reason as you can see they are all above average in terms of Yards Allowed/Total Snap (Bleed Z) given their ability to defend passes and not draw looks.
Attack Ratio - Who's Not?
Moreland gets bombed and but he's not giving up a huge amount of yards, just shy of average. Q. Dunbar, on the other hand has earned the attention.
Bleed Ratio - Who's Hot?
Jonathan Jones does a great job of keeping the yards down although teams keep targeting him. The rest of the top Bleed Z guys are respected with Attack Z ratings above average meaning they are targeted less than average.
Bleed Ratio - Who's Not?
Looks like the league knows what they are doing in attacking these guys with the exception of Joseph who has defended passes when targeted but clearly has allowed more than his fair share of yards.
Burn Ratio - Who's Hot?
Malcolm Butler is two deviations above average (no TDs and 1 INT in 191 snaps). Dunbar's saving grace is he keeps guys out of the end zone.
Burn Ratio - Who's Not?
Rookie Igbinoghene is getting tossed into the deep end of the pool. He is getting shelled in terms of targets he can't defend, has given up a lot of yards and 3 TDs with no INTs in 233 snaps. Welcome to the NFL. Worley is targeted below average...for now. Given his Burn Z, teams will start going at him.
Team Performance
Here are charts for each Division comparing the aggregate Cornerback Attack, Bleed and Burn ratios to the QB Rating Z score for each team's Week 6 opponent (in parentheses underneath).
NWE has injuries but they take on a DEN offense that has a lot of uncertainty.
BAL CBs look good against the PHI passing "attack". CLE looks to be in a lot of trouble vs. PIT.
HOU should be able to exploit the TEN CBs Bleed Z.
KAN gives up more than their share of TDs and look for BUF to capitalize.
The WAS-NYG game has two teams with below average QBRs. Should not be a lot of scoring through the air. Take the under.
I got nothing here.
TAM has some young exciting talent at CB but they are in for a challenge this week.
LAR QBR is above average so it will be interesting to see how the SFO CBs handle it.
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