2025 NFL Trends
The 12 Personnel Revolution: How Offenses Are Beating the 2-High Shell
If you watched NFL football this past season and felt like you were seeing a lot more two-tight-end sets, you weren't imagining it. The league is in the middle of a full-blown personnel shift — and it's a direct response to the defensive revolution that's dominated the last five years.
Tight ends logged 48,102 snaps in 2025 — a 20-year record. They caught 2,866 passes for 29,072 yards, both records. And it wasn't just 12 personnel: three-TE sets exploded too, with 1,897 plays run from 13 personnel — a 33% increase from 2024. The Rams alone ran 451 plays from 13 personnel, shattering the previous record of 204. Sean McVay, the coach who once ran near-100% 11 personnel during his Super Bowl run, has completely reversed his philosophy. That tells you everything about where the league is headed.
The Numbers
12 personnel usage has been climbing steadily since 2018, but 2025 was the tipping point:
12 Personnel Usage Rate (League-Wide)
| Season | 12 Rate | Notes |
|---|---|---|
| 2018 | ~15-16% | 11 personnel dominated at 60%+ |
| 2020 | ~17% | Baseline before the shift |
| 2022 | ~20% | First noticeable jump |
| 2024 | 22.1% | Highest rate in the 2000s |
| 2025 | 23.7% | Highest since tracking began (2007) |
Why It's Happening: The Fangio Chain Reaction
This isn't random. It's the latest move in a chess match that started in 2019.
Step 1: The 2-high revolution (2019–2021). Vic Fangio in Denver and Brandon Staley in LA pioneered playing two-high safety shells on 75%+ of defensive snaps. The concept spread league-wide. By 2025, the league average 2-high rate was 43.1% of pass plays, with Minnesota running it on 58.3%.
Step 2: Nickel becomes the base (2020–2023). To play 2-high, defenses needed lighter, faster personnel. Nickel (5 DBs) became the default on roughly two-thirds of all defensive snaps. The extra DB replaced a linebacker — great for covering receivers, less great for stopping the run.
Step 3: Offenses go heavy (2023–present). Offensive coordinators realized: if defenses are going to put 5 DBs on the field, put an extra blocker out there and make them pay. 12 personnel forces a choice that defensive coordinators hate.
The Impossible Choice
When an offense lines up in 12 personnel, the defense faces a personnel dilemma with no clean answer:
Option A: Stay in nickel. You're undersized in the box. The offense has a blocker advantage, and the run game opens up.
Option B: Go to base defense (swap a DB for a linebacker). Now you're in single-high coverage, which limits your coverage options and leaves corners isolated on the outside.
The data shows most defenses choose Option B. In 2025, defenses played 2-high on 44.7% of pass plays against 11 personnel but only 39.2% against 12 personnel. That 5.5-percentage-point drop is the whole game.
The Real Mechanism: It's Not About the Run
Here's the counterintuitive part: 12 personnel doesn't actually run the ball better than 11 personnel.
Personnel Efficiency Comparison
| Personnel | Rush EPA | YPC | Pass EPA (vs 1-high) |
|---|---|---|---|
| 11 | +0.030 | 4.9 | +0.015 |
| 12 | -0.042 | 4.2 | +0.080 |
The run game is worse from 12 personnel on a per-play basis. But that's not the point. The point is that the run threat is credible enough to unlock play action — and the play-action numbers are staggering.
Play-action rate from 12 personnel: 42.6%. From 11 personnel: 14.7%. Nearly three times as often.
Teams in 12 personnel run play action on almost half their dropbacks because the defense has to respect the run. The extra tight end makes the run look real, which makes the play fake work, which makes the pass efficient. When defenses go to 1-high to match the personnel, 12-personnel offenses post +0.080 EPA on passes — more than 5x better than 11 personnel against the same coverage shell (+0.015).
The value chain: heavy personnel → credible run threat → 3x play-action rate → force single-high → exploit isolated corners.
Who's Leading the Charge
12 Personnel Usage Leaders (by volume)
| Team | 12 Rate | 12 EPA |
|---|---|---|
| Cleveland | 44.7% | -0.159 |
| Atlanta | 40.8% | +0.068 |
| NY Giants | 40.3% | +0.020 |
| Baltimore | 39.9% | -0.020 |
| Cincinnati | 39.4% | -0.068 |
| Las Vegas | 39.2% | -0.170 |
| Chicago | 36.9% | +0.062 |
| Seattle | 36.2% | +0.112 |
12 Personnel Efficiency Leaders (by EPA)
| Team | 12 EPA | Pass EPA (12) | Rush EPA (12) |
|---|---|---|---|
| Indianapolis | +0.236 | +0.324 | +0.165 |
| Miami | +0.191 | +0.246 | +0.088 |
| Seattle | +0.112 | +0.270 | +0.020 |
| Philadelphia | +0.099 | +0.206 | +0.033 |
| San Francisco | +0.085 | -0.023 | -0.024 |
| Detroit | +0.081 | +0.358 | -0.130 |
The split between volume and efficiency is telling. Cleveland ran 12 personnel more than anyone (44.7%) but at the worst efficiency in the league (-0.159). Indianapolis ran it less (35.2%) but generated the best EPA (+0.236). The grouping alone doesn't work. You need the right tight ends and the right scheme to exploit the advantages it creates.
Ben Johnson in Chicago has been the most vocal advocate: “Sometimes 12 personnel will do the trick, other times 13 will do the trick” — explicitly framing heavy sets as the counter to nickel defenses.
The Defensive Counter Is Coming
The 12-personnel wave won't go unanswered. The emerging response is the “Big Nickel” — three safeties on the field instead of three corners. Hybrid safety/linebacker types who can cover tight ends in space and fit the run without being physically overmatched.
Some defenses are already trying to hold firm. Arizona maintained a 54.5% 2-high rate against 12 personnel (higher than their 50.6% overall rate). Minnesota went to 60.8%. These teams are betting their hybrid defenders can handle the extra blocker without changing their shell.
This is driving draft capital toward “super safety” archetypes — players in the Kyle Hamilton mold who can play in the box, over the top, or matched up on a tight end. Expect this to be a theme of the next two draft cycles.
What It Means for Fantasy
TE2 is now a real position. Teams need two quality tight ends to run their base offense. The 48,102 TE snaps in 2025 represent real fantasy opportunity — not just for elite TE1s, but for the TE2s who are on the field for 30–40% of snaps in 12-personnel-heavy offenses.
Watch the play-action rate, not the run game. The conventional wisdom is that a good run game helps the pass game. The 12-personnel data suggests something more specific: a credible run threat helps the pass game. Teams that run 12 personnel at high rates will have inflated play-action numbers, which is where the passing efficiency lives.
Volume leaders aren't efficiency leaders. Don't assume a team running heavy 12 is good at it. Cleveland ran it more than anyone and was terrible. Target the efficiency leaders — Indianapolis, Miami, Seattle — when evaluating skill players in those systems.
The WR calculus changes. In 12 personnel, only two receivers are on the field. Target concentration increases — the WR1 and WR2 see a higher percentage of pass targets when they're out there. But total snaps in 11 personnel decrease, so raw target volume may not rise. The fantasy value is in per-snap efficiency, not raw counting stats.
The NFL's tactical evolution continues: offenses found the counter to the Fangio revolution, and now defenses need to find the counter to the counter. The Big Nickel and hybrid safety archetypes are the early answers, but the league is still in the early innings of this personnel arms race.
The only certainty is that the days of 11 personnel as the default are over.