Cory's Corner: The Unicorn Has Arrived
The Packers have a defensive player loaded with athletic gifts. How will they use him?

Isaiah Simmons has jumped off the page so far in Packers training camp.
It’s not hard to figure out why. He ran a 4.39 40-yard dash accompanied with a 39-inch vertical leap as a draft prospect in the 2020 NFL Draft. Those things were the cornerstone behind why he was drafted No. 8 overall.
“There’s a reason he was a top 10 pick,” said Packers coach Matt LaFleur. “He’s got all the measurables, and it’s just getting him acclimated with our system and knowing what he can do. And try to to put him in some advantageous positions where he can really showcase his talent.”
That last sentence is why Simmons is in Green Bay. NFL teams were touting Simmons’ versatility and the fact that he was able to be positionless coming out of Clemson.
The problem is, he hasn’t mastered one position. He has struggled in zone coverage, he misses assignments, is an inconsistent tackler and has had issues with shedding blockers.
Packers defensive coordinator Jeff Hafley did a very smart thing by taking things off his plate, instead of adding to it. Simmons has been focused on off-ball linebacker so far in training camp and he has done well with learning and understanding one position.
“I feel like it’s been beneficial to me so far, just allowing me to really learn one thing, opposed to learning this today, something else tomorrow, and who knows the next day,” said Simmons. “I’m really appreciative of that.”
Simmons, who celebrates his 27th birthday today, will be entering his sixth NFL season this year. He has averaged 47 tackles a season, but has also racked up 41 missed tackles.
Simmons has been called a unicorn by Packers running back Josh Jacobs, because of freakish athletic traits. But the biggest question will be how the Packers can harness all that athletic ability, while still improving their defense.
Normally, you would encourage a guy with that much athleticism to freelance and go off script. The problem is, he isn’t sure what the script even is. If the defense is calling for a corner blitz, Simmons needs to know that it might not be the best time to take a chance with not as many bodies in the defensive backfield.
The Packers have to outline their goals and expectations for Simmons. Tell him what the defense is trying to do in every situation and what his roles and responsibilities should be.
This may seem like JV football to many of you, but Simmons needs to go back to the basics and understand the nuance of defense before he can just light his hair on fire and become a wild man.
This is kind of like Mike Holmgren trying to rein in Brett Favre. The clip of Holmgren pleading for no rocket balls is a part of Packers lore. Similarly, Simmons needs to understand that while he has all the physical gifts to do just about anything on a football field, he still needs to operate within the scheme and design of a defensive philosophy.
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Cory Jennerjohn is a graduate from UW-Oshkosh and has been in sports media for over 15 years. He was a co-host on "Clubhouse Live" and has also done various radio and TV work as well. He has written for newspapers, magazines and websites. He currently is a columnist for CHTV and also does various podcasts. He recently earned his Masters degree from the University of Iowa. He can be found on Twitter: @Coryjennerjohn
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Comments (20)
mrtundra
July 26, 2025 at 07:22 am
Get him acclimated to what Hafley needs him to do, and it will be GO PACK, GO!!! all game long!
dblbogey
July 26, 2025 at 03:03 pm
I'll reserve judgement for when the pads come on and the games count. He has impressive athletic talent, but can he play football?
Coldworld
July 26, 2025 at 07:34 am
Give him the one thing he’s never had in this league: a defined role. It’s hard to know what that will be when all are healthy at this point, since he’s currently subbing at Mike for Walker and he’s not supplanting Cooper if healthy either.
Guam
July 26, 2025 at 08:26 am
"Give him one thing he's never had in this league: a defined role."
Couldn't agree more CW. The Cardinals and Giants shuffled him between both safety positions and coverage LB and expected him to excel at all three. Hopefully the Packers keep him focused on coverage LB and see if he can develop there. The Packers could use another good coverage LB besides Cooper since that isn't a strong suit for Walker, McDuffie or Hopper.
splitpea1
July 26, 2025 at 10:17 am
That's why Simmons signed with the Packers. He felt Hafley had the "best plan" for him on defense as opposed to being spread around all over the place. He could still be a welcome addition on special teams, though, because he could make a few impact plays there.
LeotisHarris
July 26, 2025 at 10:40 am
That's the ticket, CW. The young man's career to this point reminded of the old Firesign Theater album; How Can You Be in Two Places at Once When You're Really Not Anywhere at All. After all, common sense is learned behavior. I'm pulling for the guy.
LambeauPlain
July 26, 2025 at 08:52 am
Simmons is an attractive chess piece for Halfey.
The Coach has been very good identifying a players strengths and deploying them in match up football based on the next team on the schedule. Hafley is also very insistent on vision and break to swarm to the ball...and tackle with technique and purpose. Simmons substandard tackling was likely a key reason AZ gave up on him. Hafley, if anyone, should be able to fix him getting stops.
Isaiah did have 3 fairly productive years with the Cardinals, but it seemed clear they could not decide on a primary role...bouncing him from LB to S to hybrid to edge. While he played OK, it was not what AZ had in mind for a high first rounder and they traded him to the Giants. NY had no clue how to use him and he got buried on the depth chart...then cut...and picked up by Gutey.
Could be another FA find.
murf7777
July 26, 2025 at 09:54 am
There’s a reason he’s bounced out of AZ and NYG’s. It seems like he did have a defined role for a couple of years. From my understanding, he was primarily an Off ball linebacker his first two years. Probably, his best two years. He then had a coaching change and was moved around. Time will tell once he starts playing pre-season games under Hafley.
Alberta_Packer
July 26, 2025 at 11:26 am
What the Packers sorely lacked last season was a off-ball coverage LB. Opposing RBs, TEs and Slot Receivers often exploited the Packers flats, curls and hook zones. Considering the competion of McDuffie, Hopper, Welch and Jamon-Johnson - Simmons clearly has the best resume for coverage responsibilities and as a secondary run-stopper. I think he offers a definite upgrade for Eric Wilson's 2024 snaps on D (556) and STs (321).
BuckyBadger
July 26, 2025 at 04:09 pm
Simmons has always preformed well in practice. It is when the hitting happens for real is when he got lost. Hope he can produce for the team but I wouldn't get excited until they start playing for real. He always a great athlete but has never turned that into being a good football player. He has trouble shedding blocks and hasn't been great in coverage.
LayingTheLawe
July 26, 2025 at 05:39 pm
That is the key, I reckon. Find the correct way to use his athletic gifts. Too often, football seems to do it the other way - they expect the athlete to fit into the system instead of the other way around. And that's why you see things like Zach Baun have 4 nothing years, then go to another team and explode like he did last season for the Eagles. Hopefully, that sort of thing can be replicated here.
murf7777
July 27, 2025 at 02:55 pm
It also has something to do with picking the right guys that fit your system. Think Belichick.
Leatherhead
July 26, 2025 at 07:39 pm
The Hybrid Guy. The Packers have been looking for that guy who can cover like a safety and tackle like a linebacker for a long time. I hope he'll help. McKinney was quoted in an article about how Simmons was going to help us "a lot". You can never have too many guys who can cover and tackle.
In our draft went Offense, Offense, and Offense. Our primary FA acquisition was on offense. But this defense is transformed with some first and second year guys and some FAs: McKinney, Hobbs, Simmons, Bullard, Williams, and of course, Cooper. Add in this year's rookies. We've substantially upgraded the defensive talent since Hafley was hired. I'm going to be very disappointed if teams score 20 on us in the first half, like happened a couple of times last year, because we have the potential to be a real good defense. Real good.
BuckyBadger
July 26, 2025 at 09:53 pm
The problem with tweeners is that they tend not to do either very well. In his time in the NFL his tackling has been poor and his coverage below average.
Leatherhead
July 27, 2025 at 10:18 am
Is this based on your personal observation, or are you just reading PFF?
dobber
July 26, 2025 at 09:06 pm
"The Packers have to outline their goals and expectations for Simmons. Tell him what the defense is trying to do in every situation and what his roles and responsibilities should be. "
Do we really think that "keep it simple" or "define the responsibilities" hasn't been a plan of attack for other teams with Simmons at some point? Here's a guy who has all the athletic gifts in the world, but came out of college with scouting reports that said he lacks instincts and doesn't process on the fly...and they've been mostly right. We've seen reclamation and change of scenery projects work--at least for a while, DeVondre Campbell--in the past. We can hope Simmons can be that kind of guy, but the fact that the Packers got him off the street for a song at draft time says that other GMs didn't see him as worth very much.
GregC
July 27, 2025 at 05:06 am
No padded practices yet. Too early to get excited about a player with a history of being a poor tackler. Also, when Quay Walker returns to being a full participant in practice, Isaiah McDuffie will be the #3 linebacker.
HawkPacker
July 27, 2025 at 11:42 am
'Also, when Quay Walker returns to being a full participant in practice, Isaiah McDuffie will be the #3 linebacker.'
Not if Simmons ballsout!
Boneman
July 27, 2025 at 06:27 am
Simmons is that early training camp darling. What if, what if, what if? When the rubber hits the road he'll be a great special teams guy and backup. If not he'll be looking for work elsewhere. That's the most likely out come but what the heck, what if we just simplify things???
Ferrari-Driver
July 27, 2025 at 11:59 am
Most of us are not rocket scientists and that may be especially important to many professional football players. I remember an acronym from years ago which was "KISS" which stood for KEEP IT SIMPLE, STUPID. It's a design principle emphasizing that most systems work best when they are kept simple rather than made overly complicated. I think Hafley is committed to implementing the KISS with Simmons by having him concentrate on learning one position and learning it well.