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NFL Playoff Predictor

Pick a season, rewind to any week, and the simulator plays the rest of it 10,000 times to work out every team's odds of reaching the postseason. It seeds the full 14-team field by the real rules — four division winners, three wild cards, one bye, reseeded every round — and when a tiebreaker decides a seed it names the rule and shows the record that settled it. The model is published further down. Free, no sign-up.

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How the NFL playoff format actually works

Fourteen teams, seven per conference: the four division winners, seeded 1 through 4 by record, and the three best records left over, who take the wild cards at 5, 6 and 7.

The rule that trips people up: a division title always outranks a better record. The 2024 NFC is the clean example. The Rams won the West at 10-7 and were the 4 seed. Minnesota went 14-3 — four games better, one of the best records in football — and was the 5 seed, a wild card, because Detroit won their division. Four extra wins bought the Vikings nothing but a road game in the first round.

Only the 1 seed gets a bye — this changed after the 2019 season, when the field grew from 12 teams to 14 and the conferences dropped from two byes to one. Everyone else plays on Wild Card weekend: 2 hosts 7, 3 hosts 6, 4 hosts 5, single elimination, higher seed at home. Then the bracket reseeds. In the Divisional round the 1 seed hosts the lowest surviving seed and the other two winners play, so a 7 seed that pulls an upset is sent to the 1 seed, not to a fixed bracket slot. The higher seed hosts every game right through the Conference Championships; only the Super Bowl is at a neutral site, with no home team.

NFL tiebreakers: the part nobody explains properly

The NFL does not settle ties with a game. It settles them with a ladder of criteria — and there are actually two ladders, which is the detail most explanations miss. Which one applies depends on where the tied teams sit.

Teams in the same division are separated by this order:

  1. Head-to-head record between the tied teams
  2. Record within the division
  3. Record in common games
  4. Record within the conference
  5. Strength of victory — the combined record of the teams they beat
  6. Strength of schedule — the combined record of every team they played
  7. Best combined ranking in points scored and points allowed, in the conference
  8. The same ranking, leaguewide
  9. Net points in common games, then net points overall, then net touchdowns, then a coin toss

Teams from different divisions — which is how the four division winners are ordered into seeds 1-4, and how the wild cards are chosen — use a different ladder. It drops the division-record step, it requires at least four common games before that step counts, and its head-to-head step is a sweep: it only applies if one team beat every other tied team, or lost to every one. Before any of it runs, each division is first reduced to its highest-ranked team, so no single division can quietly occupy two wild-card slots on paper.

There is one more rule that catches almost every simulator: when three or more teams are tied and a step separates some but not all of them, the ones still tied go back to step one and start over. A three-way tie is not a sorted list — it is a bracket that can reset.

The 2025 NFC South is exactly that case, and it is why this tool plays out every game instead of sorting win totals. Carolina, Tampa Bay and Atlanta all finished 8-9, and all three went 3-3 inside the division, so the standings could not choose. The head-to-head among the three did: Carolina went 3-1 against the other two, Tampa Bay 2-2, Atlanta 1-3. Carolina took the division and the 4 seed; Tampa Bay and Atlanta reset to a two-team tie and kept going down the ladder. Any predictor that breaks that tie with a coin flip gets the NFC seeding wrong, and this one shows you the head-to-head record it used.

Two steps at the very bottom of both ladders are not modelled here, and the tool says so rather than faking them: net touchdowns needs per-game touchdown counts the score-only data does not carry, and a coin toss is not a rule a model should pretend to run. Across all five seasons, no seed is decided that far down — every tie that mattered was settled higher up, where the data is complete.

Does it work? The backtest

A model you cannot check is a guess with a percentage sign on it. So here is the check, and you can rerun it yourself — scripts/backtest-nfl-playoffs.mjs in the source.

Seeding. Run the seeder over all five completed seasons and it reproduces the real postseason field exactly: all 14 teams, in the right 1-to-7 order, in both conferences, in every season — 10 conference-seasons out of 10. That includes every tie it had to break, among them the three-way 2025 NFC South above, and it means the seeding engine, tiebreakers and all, is not the source of any error in the odds.

Odds. Rewound to five weeks in each season and scored against what actually happened, the model's Brier score is 0.105, against 0.246 for a baseline that just guesses the base rate at every team. From a Week 15 cut it has 13 or 14 of the eventual 14 playoff teams in its top 14; from Week 4, 8 to 12. That is the honest shape of it — a month in, this is a weak signal; by December it is a strong one.

Where it is wrong. The model is well calibrated in the middle of the range but a shade overconfident at the very top: teams it puts above 90% make it about 97% of the time, which is close but not perfect. The cause is no mystery — it has no idea about injuries, a quarterback going down, or a Week 18 where a locked-in seed rests its starters, so real seasons scatter a little more than simulated ones. We would rather print that than tune it away on five seasons of data and call it calibrated.

The model, in full

Most predictors call their model proprietary. Here is ours, in the order it runs:

pythag    = PF^2.37 / (PF^2.37 + PA^2.37)

strength  = (pythag x gamesPlayed + 0.500 x 4) / (gamesPlayed + 4)

p(game)   = log5(strengthHome, strengthAway), tilted to 0.539 at home
            (no tilt at a neutral site)

season    = play every remaining game as that weighted coin
            rebuild the standings, seed the field by the real rules
            run the reseeded bracket

odds      = repeat 10,000 times, count

Strength comes from point differential, not from won-lost record. A team's points scored and allowed predict its future better than its own record does, because a 17-game record folds in a lot of luck in one-score games and that luck does not carry over. This is the Pythagorean expectation, and 2.37 is Pro-Football-Reference's standard exponent for the NFL.

Then it is regressed toward .500. Seventeen games is a short season; after a month a team's point differential is mostly noise. The model blends each team's Pythagorean rate with a .500 prior worth 4 games. That constant is not a guess — it is the value that best predicts teams' actual remaining records across 2021-2025, and the sweep that finds it is in the backtest script. It lands on a clean interior best, not at either extreme, which is the sign it is measuring something real rather than flattering the wrong target.

Home-field advantage is measured, not assumed. Home teams won 51.1% of the time in 2021, 56.6% in 2022, 55.8% in 2023, 52.4% in 2024 and 53.8% in 2025. The model uses 0.539, the average of those, and turns it off entirely for the neutral-site international games and the Super Bowl.

What it does not know: injuries, a quarterback change, trades, rest, weather, or a team that has clinched and empties its bench in Week 18. A team that just lost its starting quarterback is, to this model, still the team its point differential says it is. Treat the number as the middle of a wide range rather than a forecast, and do not bet on it — you will not beat a market that prices all of the above.

Why every game is simulated instead of just the standings

The shortcut most simulators take is to give each team a win total and sort. That cannot work in the NFL, because the tiebreakers need to know who beat whom, who shared which opponents, and how three tied teams did against each other. A simulated season that ends with three teams at 8-9 has to be resolved by the head-to-head in that simulation, not the real one. So each of the 10,000 runs plays out every remaining game, rebuilds the full standings, and seeds the field the way the NFL would — reduction rule, resets and all.

The same simulation runs the reseeded bracket, which is where the Super Bowl column comes from. A single game is close to a coin flip even for a strong favourite, which is why a great team's title odds are far lower than its playoff odds, and why the first-round bye — worth a free win and a week of rest to the 1 seed alone — moves the numbers as much as it does.

Where the data comes from

Every game, week and score is from nflverse, the open NFL data project, under a Creative Commons licence that permits commercial use with attribution. Conference and division alignment is entered by hand, because the games file carries neither — the same way this site's Guess the NFL Player game sources its roster facts.

Nothing here is scraped from a site that forbids it, and no player data, images or team marks are used — the tool needs none of that. It reports team names as text and nothing more.

  • nflverse — every regular-season game, week and final score from 2021 to 2025 ( CC BY 4.0)

SportsMonkie is an independent project and is not affiliated with, endorsed by, or sponsored by the National Football League or any NFL team. Team names are reported as text, for informational purposes. No team logos or marks are used.

Frequently asked questions

How many teams can qualify for the NFL Playoffs?
Fourteen — seven from each conference. Each conference sends its four division winners plus the three best records left over, which take the wild cards. The field grew from 12 teams to 14 after the 2019 season, and at the same time each conference dropped from two first-round byes to one.
How does the NFL wild card work?
The three best teams in a conference that did not win their division take the wild cards, seeded 5, 6 and 7. On Wild Card weekend the 2 seed hosts the 7, the 3 hosts the 6 and the 4 hosts the 5 — single elimination, higher seed at home. Only the 1 seed sits the round out on a bye. Division does not matter for the wild cards; all three can come from the same division.
Are the NFL playoffs reseeded?
Yes. After each round the surviving teams are re-ranked by seed, so the 1 seed always hosts the lowest remaining seed. A 7 seed that upsets the 2 in the wild-card round is sent to the 1 seed in the divisional round, not to a fixed bracket slot. Reseeding runs through the conference championship; the Super Bowl is the only game at a neutral site, with no home team.
What happens if two NFL teams have the same record?
The tie is broken by rule, not by a game. For two teams in the same division the order is head-to-head record, then record within the division, then common games, then conference record, then strength of victory and strength of schedule, and on down. Head-to-head settles most of them: whoever won the season series takes the higher seed.
What are the Wild Card tie breakers?
When the tied teams come from different divisions, a slightly different ladder applies: head-to-head only if one team swept the others, then conference record, then common games (a minimum of four), then strength of victory and strength of schedule. Each division is first reduced to its highest-ranked team, and when three teams are tied and one gets separated out, the remaining two start the ladder over from the top.

If you want the same treatment for baseball, the MLB playoff predictor simulates the 12-team field the same way, and the fantasy football trade calculator publishes its formula too. All of them live in the tools hub.