The young-QB window isn't a scoring edge. It's an attendance record.

What this means for your roster. Buy Patrick Mahomes at QB7 and Joe Burrow at QB10 while the room discounts them for turning 30. Let somebody else pay the second-round startup price for Jaxson Dart, who our board has at QB14, or Cam Ward at QB17. Hold Drake Maye at QB2 and Caleb Williams at QB4, because our board got them there off 4,394 and 3,942 passing yards, not off a birth certificate. Hold Jayden Daniels at QB16 through the seven-game 2025 he lost. And hold Josh Allen at QB1: he turns 35 this season and he is still the best quarterback on our board, which tells you what the engine thinks the window is worth. (Ranks are the dynasty superflex board, July 30 production snapshot.)

What the consensus says

Every superflex startup guide in circulation says the same thing, with total confidence. Heath Cummings' CBS Sports startup mock takes three quarterbacks in three rounds on the logic that "there is never a time when quarterbacks are cheaper than during a startup draft." In it, Drake Maye goes 1.04, Jayden Daniels 1.09, Caleb Williams 2.01, Jaxson Dart 2.04. Patrick Mahomes goes 2.08. Four quarterbacks 25 and under, drafted ahead of a two-time MVP, in a format where you start two of them.

Sports Illustrated files the mechanism on August 5: quarterbacks carry "the highest floor, highest ceiling, and longest career lifespans of any position." Dynasty League Football runs the counter-genre the same week, warning about drafters "paying for projection" as if the breakout already happened, while FantasyPros has the veteran tier sliding in its August chart. The room knows the shape of the argument. It takes the young guy anyway.

The word doing all the work is "window." Everyone means points. Nobody checked whether it is points.

The claim, in plain English

A quarterback is in the test group if he was 24 or younger on September 1 of a season he actually started, meaning eight games and 200 pass attempts. Everyone else clearing that same starter bar is the comparison. Hold Y0 pass attempts fixed, then compare what the two groups returned over the next three seasons. The script is here.

The scoring rule is the whole game. I did not measure points per game played. I measured points per game your roster spot was on the clock: total points across the next three seasons divided by every scheduled game in them, played or not. A year on the bench scores zero and still counts. That is what a dynasty roster spot returns, and it is the version nobody runs.

How I beat on it

Regular seasons 2015 through 2022, so the three-year window closes in 2025 at the latest. Half-PPR with the tight-end bonus. That is 262 qualifying starting seasons from 74 quarterbacks, 53 of them under 25. Because the same quarterback appears several times, I built the error bars by resampling quarterbacks rather than seasons, 4,000 times. Framework: the research spec.

What the data actually said

First swing: the young group returned 11.02 points per rostered game over three years, the older group 9.74. A gap of 1.28, pointing exactly where the consensus says it should. Then I put the error bars on it and the 95 percent range came back at minus 0.86 to plus 3.41. It cannot settle the sign.

So I went looking for the edge somewhere else. It kept not being there.

One line clears its own error bars and it is the one about attendance. Sixty percent of young starters were still starting three years later against 44 percent of everyone else. Split the raw 1.28 into its parts and 71 percent of it is availability rather than scoring. Narrow the comparison to prime-age starters, 25 through 32, the ones you actually choose between in a startup, and the whole gap falls to 0.72.

Two more things. The spread is identical, standard deviation 6.58 young against 6.50 old, so the young quarterback is not the volatile asset and the veteran is not the safe one. They are the same bet with different marketing. And the young range is absurd: Josh Allen's 2019 returned 23.91 points per rostered game over the following three years, while Johnny Manziel's 2015, Josh Rosen's 2018, DeShone Kizer's 2017, Drew Lock's 2020 and Davis Mills' 2022 each returned zero. None of those five is on our 2026 board in any form. Every one of them was somebody's 2.04.

What the engine already figured out

Our board wouldn't have made this bet, and one line proves it: Josh Allen, who turns 35 this season, is QB1 on both the superflex and the one-quarterback dynasty board. The engine ranks quarterbacks on production and how the age curve treats it. It carries no separate youth bonus on top: the young-QB ceiling bonus that used to live in the code is switched off in production and reads 1.000 on every row of every walk-forward cache.

That is why the board has Dart at QB14 and Ward at QB17 while startup rooms take them in the second round, and why Maye sits QB2 and Williams QB4, which is not a contradiction. Maye and Williams are up there on passing yards. Dart and Ward are being drafted on a birthday.

What to do about it

The window is real. It is an attendance record, not a scoring record, and attendance is the cheapest thing in football to buy.

The trade this unlocks is boring and free. Somebody in your league is discounting a 30-year-old because his window is closing and paying up for a 23-year-old because his is opening. At the same starting volume, the historical difference between those two assets over three years is three quarters of a point per rostered game, and even that cannot clear its own uncertainty. Take the points. Let him have the calendar.

One honest caveat: 53 young starting seasons is not many, and a null on a small sample is a failure to detect, not a proof of absence. If the premium is real it is smaller than this record can see, which is a different sentence from "it is zero" and a much better reason to stop paying a first-round price for it.

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