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DEL Time: 08:21
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Request For: Pro and College Football
Request Title: Zone/man Balancing vs Pass
Description
Better balance between zone and man defense. I am modifying this request to focus on pass defense; the run defense issue was separate and will be fixed more quickly.
Category: Enhancement
Status: In Review (last updated Sep 28 12:18:06 2025
)
Priority: Under Discussion
Admin Notes
It's been a while since this discussion, but I think the specific request was to make the advantages and disadvantages of man vs. zone defense be more realistic. I've located the script used to create the performance data shown in the help pages:
http://www.dolphinsim.com/help/coach/details.shtml
Updating to the current CCEL (the data on the help page were from January 2013), here is what I get for the main Pro Set vs. 4-3 defenses:
COVER RBlk %Swp RAvg %TFL %10+ PBlk %RB %TE %Lng PAvg %Sck %Cmp %Int YPC
1-man 3.48 56.1 3.50 15.8 7.6 4.28 16.4 8.1 21.6 6.78 7.5 61.9 2.8 12.3
2-man 3.99 54.0 4.02 9.6 4.8 4.53 29.9 14.6 12.8 5.56 6.3 63.4 3.1 9.8
2-zone 4.12 54.2 4.10 10.4 5.4 5.37 33.0 17.7 21.2 6.37 3.0 63.9 2.7 10.5
3-zone 4.12 54.6 4.04 10.4 4.8 5.36 18.5 7.7 19.4 6.91 3.0 70.2 2.3 10.3
I'm not going to comment much on the 1-man line, except to note that blitzing a linebacker and having only one safety deep seems to have the expected increase in long passes and long gains, as well as sacks and run stops for loss.
A few oddities seem to come up with 2-man vs. the zone defenses in pass defense.
- Man defense has about double the sack rate, despite no blitzes in either case. I think this may be the result of linebackers' behavior in man defense, if their receiver is a TE or running back not running a route.
- Teams attempt the fewest long passes against 2-man. I would assume that, for better or worse, this reflects that many deep routes are double-covered by the corner and the safety on that side. Deep routes against zone also get help from underneath, but maybe less so.
- While completion percentages are comparable between 2-man and 2-zone, they are much higher against 3-zone (or 4-zone). I think this is somewhat realistic given fewer underneath defenders, but I suspect there should be a correspondingly lower YPC to reflect the underneath completions. Perhaps the adjustments to run to a receiver not tackled by his defender should be less effective when in man defense.
As always, comments would be appreciated.
Submitted Dec 29 17:37:28 2018
by Andy Dolphin
Coaches In Favor of Change: Andy Dolphin, Derek Brown, Johnny Gunn, Ron BK, John Henry, Loren Smith, Bob Miller, Adam Dutton, Jim Caruso, Gregor Ellis, Coach Proto, George Rotker
Coaches Opposed to Change: none
Comments
Gregor Ellis (Sep 14 00:13:44 2025
)
Yes Yes Yes this would be great. I think that also goes beyond to 1-Man sets that I don't think are effective enough at getting pressure on the QB in passing situations to balance out the lack of the 2nd deep SF.
Jim Caruso (Sep 14 19:00:37 2025
)
The more variety for successful defensive strategies, the better. I imagine the cumulative defense for top teams is 75-80% 2-man. It would also be more interesting to adjust gameplans depending on if facing man/zone defense. I think most of us use the same offensive gameplan every week (or perhaps for many seasons).
George Rotker (Sep 16 08:18:44 2025
)
Absolutely. Long overdue. How can zone defense allow more long passes? Does not make sense.
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