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Data + sources
RAS by Kent Lee Platte·Consensus Big Board (Arif Hasan)·nflverse·PFR·CFBD·All sources & credits·Methodology
Career-value model, live
Privacy·Terms·Press ⌘K to search·Draftanomics2026
  1. Draftanomics/
  2. Prospects/
  3. 2015 board/
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Side-by-side comparison

Backtest

2 prospects · 2015 draft

Each spoke: percentile within the prospect's own position (QB)
TS
Trevor Siemian
QB · Northwestern
23.3 yo · — · —
GG
Garrett Grayson
QB · Colorado St.
23.9 yo · — · —
Tiebreaker
Medium confidence
Take Trevor Siemian over Garrett Grayson.

Decisive factor: a bust risk 20 points lower.

Headline metrics

The four numbers a GM checks first.

Trevor Siemian
Predicted pick
#222
range #220–#224
Bust probability· rough estimate
45%
Consensus rank
—
no boards yet
Career arc
arrives after the combineThe forecast needs his measurables first.
2nd-deal AAV
$7Mmodel
Garrett Grayson
Predicted pick
#221
range #219–#223
Bust probability· rough estimate
65%
Consensus rank
—
no boards yet
Career arc
arrives after the combineThe forecast needs his measurables first.
2nd-deal AAV
$15Mmodel

Feature radar

Each axis is the prospect's percentile among prospects at his position (0–100). Bigger shape = stronger across the board.

ProductionAthleticismAgeConsensusPer-play impact (PPA)Breakout ageWorkloadRAS × production
Prospects
  • Trevor Siemian· QB
  • Garrett Grayson· QB
Axis leaders
  • ProductionTrevor Siemian100
  • AthleticismTrevor Siemian50
  • AgeTrevor Siemian13
  • ConsensusTrevor Siemian12
  • Per-play impact (PPA)Trevor Siemian50
  • Breakout ageTrevor Siemian50
  • WorkloadTrevor Siemian50
  • RAS × productionTrevor Siemian50

Comp overlap

Top five historical comps per prospect. Shared comps highlighted.

No shared comps in the top five. Each prospect has a distinct historical profile.
Trevor Siemian
  • comps arrive after the combineBefore the combine there isn't enough measured data to match him confidently against past players. Comparisons draw on recent NFL careers (2021–2024) and fill in once combine numbers and game-by-game stats land.
Garrett Grayson
  • comps arrive after the combineBefore the combine there isn't enough measured data to match him confidently against past players. Comparisons draw on recent NFL careers (2021–2024) and fill in once combine numbers and game-by-game stats land.

Risk and opportunity flags

Top three concerns and top two upside signals from the model.

Trevor Siemian
Risks
  • Older prospect
    Age 23.3 at draft. Slightly older than the cohort median (~22.5); upside ceiling is trimmed.
  • No athletic testing
    No Combine drills or Pro Day numbers on file while most of the class has tested — the athletic part of the grade is unmeasured.
  • Below-cohort college production
    Position-cohort z-score on production composite is -1.43 — well below the qb average. Raw box-score output didn't keep pace with peers.
Opportunities
  • Breakout production arc
    Career trajectory in passing yards: 256 → 1312 → 2149 → 2214. Production rose every season — the kind of upward arc that often continues into the league.
Garrett Grayson
Risks
  • Missed entire rookie season
    Drafted #75 by NOR in 2015 but recorded ZERO regular-season NFL snaps. Year-1 absence is one of the strongest single-signal bust predictors we have.
  • Older prospect
    Age 23.9 at draft. Slightly older than the cohort median (~22.5); upside ceiling is trimmed.
  • No athletic testing
    No Combine drills or Pro Day numbers on file while most of the class has tested — the athletic part of the grade is unmeasured.
Opportunities
  • Breakout production arc
    Career trajectory in passing yards: 542 → 946 → 3696 → 4006. Production rose every season — the kind of upward arc that often continues into the league.

Career trajectory forecast

Projected share of his team's snaps across the first four NFL seasons. Solid = seasons already played, dashed = the forecast.

0%25%50%75%100%Y1Y2Y3Y4Snap share
Trevor SiemianGarrett Grayson· solid = actuals, dashed = forecast

Verdict

The model's plain-English read.

Trevor Siemian

Draftanomics projects Trevor Siemian (age 23.3 at draft) as a Day 3 dart throw at #222 (range #220-#224, tight projection). Bust probability sits at 45% — real but not disqualifying. Career trajectory in passing yards: 256 → 1312 → 2149 → 2214. Production rose every season — the kind of upward arc that often continues into the league. Age 23.3 at draft. Slightly older than the cohort median (~22.5); upside ceiling is trimmed. The call is a hold: no public board ranks him, so the model's #222 stands alone — and with bust risk at 45%, let the room catch up before paying a premium.

Garrett Grayson

Draftanomics projects Garrett Grayson (age 23.9 at draft) as a Day 3 dart throw at #221 (range #219-#223, tight projection). Bust probability sits at 65% — scary. Career trajectory in passing yards: 542 → 946 → 3696 → 4006. Production rose every season — the kind of upward arc that often continues into the league. Drafted #75 by NOR in 2015 but recorded ZERO regular-season NFL snaps. Year-1 absence is one of the strongest single-signal bust predictors we have. The call is a hold: no public board ranks him, so the model's #221 stands alone — and with bust risk at 65%, let the room catch up before paying a premium.