League Formats
Your League’s Format Is a Valuation Input.
A format is not a preference setting. It decides how production converts into points, and how many players at each position must be started.
Both of those change which players clear replacement level — which changes the order of the board, not just the size of the numbers on it.
Available for iPhone.
A fantasy football league format is the combination of scoring rules and roster requirements that determines how on-field production becomes fantasy points and how many players at each position every team must start. Format changes player value in two distinct ways: scoring changes which players clear the replacement baseline at their position, and roster requirements change how deep that baseline sits. Both reorder a draft board rather than merely scaling it.
In short
- A league format changes player value through two separate mechanisms: scoring converts production into points, and roster requirements set how many players at each position must be started.
- Scoring rules reorder players within a position by rewarding a specific kind of production, rather than raising every player at that position equally.
- Roster requirements set the depth of the replacement baseline, so the same scoring rules produce different player values in leagues of different sizes or starting configurations.
- A format that changes only how many quarterbacks may be started can move quarterback value more than any scoring rule, because it changes demand rather than points.
- The format a user configures in GREEN18 produces a board built for that format from the start, rather than a shared board with a format correction applied to it.
- Changing a scoring rule in GREEN18 changes the ordering of the board itself, so no downstream step has to remember to correct for the format the user plays under.
- Between a single-quarterback league and a Superflex one, quarterbacks move a median of 19 draft slots while the next-largest position moves 6.
- GREEN18 measures how far each format axis moves the board across the real player population, and reports an axis whose median movement is under one full draft slot as not moving the board.
The two mechanisms, kept separate
Most format confusion comes from treating these as one thing. They are not, and they can pull in opposite directions.
Scoring changes WHO clears the bar
A per-reception rule rewards catch volume, so it separates players who are otherwise comparable. See PPR and standard scoring.
Roster rules change WHERE the bar sits
Starting requirements multiplied by league size set how deep replacement level reaches at each position.
Quarterback format changes DEMAND
Superflex can nearly double how many quarterbacks must be started without doubling how many are worth starting.
Why format is not a detail
A universal ranking has to assume a format. Yours is not an assumption.
If a ranking was built for full PPR and your league is standard, it is not slightly wrong — it is answering a different question, because the production it rewarded most is production your league does not pay for.
This is why draft-state valuation treats league configuration as an input rather than a filter applied afterwards.
A board built for your format, not adjusted into it
GREEN18 does not apply your format as an adjustment. The board you draft from was built under your quarterback format, your scoring rules and your league size from the start.
Those three things are what decide what a player is worth, and they are settled before any player is valued rather than corrected for afterwards.
That is what "format is an input" means in practice. Choosing PPR over standard does not nudge a shared board — it changes the order of the board itself. Nothing downstream has to remember to correct for your format, because nothing upstream ever assumed a different one.
This is the same mechanism described in draft-state valuation, applied at the level of the board rather than the pick.
The bright line we hold ourselves to
Building a board per format is only worth doing if format actually moves the board. So GREEN18 measures it.
Each format axis is tested across the real player population to see how far it displaces players, position by position. The threshold is fixed in advance and deliberately unforgiving: if the median displacement along an axis is less than one full draft slot, that axis is reported as not moving the board — however elegant the underlying math.
A test that can only confirm what you hoped is not a test. This one can return a verdict we would not like, which is the point of stating it publicly.
Under one draft slot of median movement is reported as no movement, however elegant the underlying math.
How far does the quarterback format actually move the board?
Far enough that it is the largest single format effect we measure.
On the axis between a single-quarterback league and a Superflex one, holding scoring and league size constant, quarterbacks move a median of 19 draft slots. The next-largest position on that same axis moves 6.
That is the difference between a rule that renames a slot and a rule that re-prices a position. It is also why a ranking built for one quarterback format is not slightly wrong in the other — it is answering a different question.
The measurement runs over the retained player population and is pinned in the app’s own test suite, so this figure and the code cannot drift apart without the build failing.
The three formats explained here
Superflex — what the slot actually permits, how it differs from a 2QB league, and why it re-prices quarterbacks structurally.
PPR — how a per-catch bonus re-sorts players within a position instead of lifting all pass-catchers.
Standard scoring — why removing the reception bonus is not simply PPR minus a rule.
For the quarterback mechanism in depth, see Superflex quarterback value. To work a specific case, use the replacement level calculator or the PPR value adjustment calculator.
Draft the league you actually joined.
GREEN18 starts from the scoring and roster settings you configure, so the board reflects your format rather than an assumed one.
Available for iPhone.
Questions
What is a fantasy football league format?
A league format is the combination of scoring rules and roster requirements a league plays under. Scoring determines how on-field production converts into fantasy points; roster requirements determine how many players at each position each team must start. Together they decide what any given player is worth in that league.
Does league format change fantasy rankings?
Yes. Scoring rules change which players clear the replacement baseline at their position, and roster requirements change how deep that baseline sits. Both effects reorder a board rather than scaling every value equally, so a ranking built for one format can be materially wrong in another.
Does GREEN18 adjust rankings for your league format?
No — it does not adjust a shared ranking at all. The board is built under your quarterback format, scoring rules and league size from the start, so choosing PPR over standard changes the ordering of the board itself rather than applying a correction to a common ranking.
How do you know league format actually moves a draft board?
Each format axis is measured across the real player population to see how far it displaces players by position, against a threshold fixed in advance: if the median displacement along an axis is less than one full draft slot, that axis is reported as not moving the board, however elegant the underlying math. The test is able to return a negative result.
Which format setting changes player value the most?
The quarterback configuration usually has the largest single effect. A Superflex or 2QB league changes how many quarterbacks must be started rather than how many points they score, and demand that exceeds the supply of clearly startable quarterbacks moves the position further than most scoring rules move any position.
Last reviewed . GREEN18 explains its method in full on the methodology page.