How our fantasy football projections work.

One audited path from prior-week opportunity to a point estimate, uncertainty range, and ranked list.

Historical test only — not current 2026 lineup advice.
6.3%lower error than baseline
13,711held-out player-weeks
6/6test seasons won
80.7%80% interval coverage

Every active input, model, and output.

Follow a signal from source data to a ranked player list. Every active node links to its evidence.

Fourth Down Labs historical wide receiver projection modelWeekly player stats feed prior-week opportunity features, a regularized projection model, projection intervals, ranking rules, and archived historical wide receiver rankings.InputsPlayer opportunityTeam contextModelsProjectionsRank policyOutputsSOURCE
Weekly player stats
V2018-2025
FEATURE
Recent WR opportunity
V1.0.0
MODEL
Weekly WR projection model
V0.1.0
OUTPUT
Historical PPR projections
V0.1.0
POLICY
PPR rank and tier policy
V1.0.0
OUTPUT
Historical WR rankings
V0.1.0
  1. InputsWeekly player stats

    Historical weekly opportunity and production from the approved nflverse release.

  2. Player opportunityRecent WR opportunity

    Targets, catches, yards, air yards, target share, and production from prior weeks only.

  3. ModelsWeekly WR projection model

    A regularized model estimates weekly PPR points with empirical uncertainty bands.

  4. ProjectionsHistorical PPR projections

    Frozen weekly point estimates and intervals used for out-of-time evaluation.

  5. Rank policyPPR rank and tier policy

    Expected points determine order; empirical interval separation creates tiers.

  6. OutputsHistorical WR rankings

    An archived ranking snapshot for evaluation, not current lineup advice.

sourceactive

Weekly player stats

Historical weekly opportunity and production from the approved nflverse release.

Coverage
NFL regular seasons 2018-2025
Freshness
Through 2025 Week 18
featureactive

Recent WR opportunity

Targets, catches, yards, air yards, target share, and production from prior weeks only.

Coverage
WRs with at least two prior appearances
Freshness
Locked before each forecast week
modelactive

Weekly WR projection model

A regularized model estimates weekly PPR points with empirical uncertainty bands.

6.3% betterMAE vs trailing baseline
Coverage
Historical WR PPR forecasts, 2020-2025
Freshness
Refit before each held-out season
outputactive

Historical PPR projections

Frozen weekly point estimates and intervals used for out-of-time evaluation.

Coverage
13,711 held-out player-weeks
Freshness
Archived 2025 Week 18
policyactive

PPR rank and tier policy

Expected points determine order; empirical interval separation creates tiers.

Coverage
Historical wide receivers in PPR
Freshness
Same as each projection snapshot
outputactive

Historical WR rankings

An archived ranking snapshot for evaluation, not current lineup advice.

Coverage
167 eligible wide receivers
Freshness
Archived 2025 Week 18

It beat the simple baseline every year.

Each test season was hidden while the model was fit on earlier seasons. The baseline used the same eligible player-weeks.

SeasonRowsModel MAEBaseline MAEImprovement80% coverageWeekly rank corr.
20202,1545.075.42+6.5%77.2%0.58
20212,3454.725.03+6.0%80.9%0.60
20222,2334.705.06+7.1%81.0%0.60
20232,3174.534.83+6.1%82.3%0.62
20242,2714.594.91+6.4%80.2%0.62
20252,3914.314.58+5.9%82.6%0.61

Baseline: Trailing four-appearance mean PPR points on the identical player-week rows.

What one historical ranking looked like.

2025 season before Week 18 (historical reconstruction). This table proves the projection-to-ranking path; it is not a live rankings product.

RankTierWide receiverTeamExpected PPRHistorical range
11Puka NacuaLA17.811.026.5
21Jaxon Smith-NjigbaSEA17.210.425.9
31Chris OlaveNO16.910.125.6
41Wan'Dale RobinsonNYG16.810.025.5
51Ja'Marr ChaseCIN16.59.825.3
61Amon-Ra St. BrownDET16.49.625.1
71Zay FlowersBAL14.98.223.7
81Michael WilsonARI14.37.623.1
91Luther Burden IIICHI13.66.822.3
101A.J. BrownPHI13.66.822.3
111Courtland SuttonDEN13.56.722.2
121Mike EvansTB13.26.421.9
131Parker WashingtonJAX12.86.021.5
141Stefon DiggsNE12.75.921.4
151Ricky PearsallSF12.35.521.0
161CeeDee LambDAL12.35.521.0
171Chris Godwin Jr.TB12.05.220.7
181Jakobi MeyersJAX11.54.720.2
191Terry McLaurinWAS11.34.520.0
201Jameson WilliamsDET11.34.520.0
211Mack HollinsNE11.34.520.0
221Justin JeffersonMIN11.24.419.9
231Christian WatsonGB11.14.319.8
241George PickensDAL10.73.919.4
251Nico CollinsHOU10.63.919.4
261Tee HigginsCIN10.53.719.2
271Quentin JohnstonLAC10.23.418.9
281Deebo Samuel Sr.WAS10.23.418.9
291Chimere DikeTEN9.93.118.6
301DK MetcalfPIT9.83.018.5
311Adonai MitchellNYJ9.83.018.5
321Khalil ShakirBUF9.42.718.2
331Rashee RiceKC9.32.518.0
341Tetairoa McMillanCAR9.22.417.9
351Brian Thomas Jr.JAX9.22.417.9
361DeVonta SmithPHI9.22.417.9

What this model does not know yet.

  • This is a historical baseline, not a current-season projection.
  • The eligibility pool is reconstructed from prior appearances and can lag trades, signings, and injuries.
  • The model does not use live injuries, depth charts, routes, coaching, betting markets, or news.
  • Intervals are empirical training-residual bands and are evaluated for coverage, not player-specific variance.

Live injuries, depth charts, coaching, markets, and news become active only after each signal has rights, timing, and validation evidence. See the research standards →