📉 Multi-Year Dynasty Roster Decay Grid
Build a roster from this site's real dynasty boards and watch a printed age-curve model project its value across the next five years — your competitive window, drawn on the chart below.
Formula: a player's current value is his dynasty house value, value = round(1000 × 0.987(dynasty rank−1), 2). His projected value in year t is V(t) = V(0) × Πk=1..t fgroup(age + k), where f is the annual factor from the table printed under the chart for the age he plays at that year and his position group. The roster curve is the sum of its players' projected values.
The age-cliff basis, in plain terms: players at workload-heavy, speed-first positions historically peak earliest and fall fastest — NFL running backs carry the steepest cliff here (full value to 26, sharp drops from 27) because their prime is short and collision-heavy; receivers and tight ends last longer, and quarterbacks longest of all. In basketball, guards depend most on quickness and bend earlier than wings, and wings earlier than big men, whose size ages slowest. Baseball hitters and starting pitchers hold value into their early 30s, while relievers — the most volatile role in the sport — fade sooner. Hockey forwards follow the basketball-guard shape; defencemen and goaltenders, whose games lean on positioning, last longest. Young players (≤23–25, by group) get a small growth factor (1.01–1.03) reflecting development, never more. These brackets are an illustrative summary of the well-known historical pattern, printed in full below — they are not fitted to this site's data and no individual outcome is promised.
Verified ages only — no exceptions: the model needs a real age, so the roster builder joins the dynasty board to this site's profiles, which carry an age only where a date of birth was verified. A player whose age shows as — on this site is excluded from this builder, with the reason shown next to his name — he is never assigned, estimated or guessed an age.
Build your roster
The decay grid covers these five leagues because the printed age curves are defined per position group for them. Other sports' dynasty boards carry no position-group curve here, so they are honestly not offered rather than forced onto a borrowed curve.
Loading board and verified ages…
Your roster & its 5-year decay grid
| Player | Pos (group) | Age now | Now | Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | |
|---|---|---|---|---|---|---|---|---|---|
| No players yet — search above and add verified-age players. | |||||||||
Competitive-window chart (roster total by year)
The printed age curves (annual factor by age played at)
How to read a row: e.g. NFL RB — a back keeps ×1.02 per year to age 23, ×1.00 through 26, then ×0.90 at 27, ×0.84 at 28, ×0.76 at 29 and ×0.66 at 30+, compounding each year. Factors multiply the value carried into that year.
About the Dynasty Roster Decay Grid
A dynasty roster is a portfolio with an expiry date. The Roster Decay Grid makes that visible: build a roster from this site's real dynasty boards and a printed age-curve model projects its total house value across the next five years, drawn on a chart — your competitive window, and the cliff at its end, in one picture.
The model is mechanical and fully printed on the page. A player's current value is his dynasty house value, value = round(1000 × 0.987(dynasty rank−1), 2). His projected value in year t multiplies that by one annual factor per year, f, taken from a per-position-group age table printed under the chart for the age he plays at that year: V(t) = V(0) × Π f(age + k). The roster curve is the sum of its players. The brackets summarise the well-known historical pattern — workload-heavy, speed-first positions peak earliest (NFL running backs carry the steepest cliff, full value to 26, sharp drops from 27), quarterbacks and big men last longest, young players (≤23–25 by group) get a small growth factor of 1.01–1.03. The curves are an illustrative summary of that pattern, not fitted to this site's data, and no individual outcome is promised.
One rule has no exceptions: verified ages only. The builder joins the dynasty board to this site's profiles, which carry an age only where a date of birth was verified. A player whose age shows as a dash on this site is excluded from the builder, with the reason shown next to his name — he is never assigned, estimated or guessed an age. It is a model, not a prediction: it knows nothing about injuries, role changes, trades or breakouts, and the page says so.
Frequently asked questions
How does the Roster Decay Grid project a player's value?
Projected value V(t) = current dynasty house value × the product of one annual age factor per year, taken from the per-position-group age table printed on the page for the age the player plays at that year. The roster curve is the sum of its players' projected values over five years.
Why is a player missing from the roster builder?
Verified ages only: the model needs a real age, and this site shows an age only where a date of birth was verified. A player whose age shows as a dash is excluded, with the reason shown next to his name — ages are never estimated or guessed.
Is the decay grid a prediction?
No — it is a printed mechanical model. It applies one age curve per position group and knows nothing about injuries, role changes, trades or breakout seasons.
House terms: trade value · value over replacement · dynasty vs redraft · UPM · all house terms