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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
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Side-by-side comparison

Backtest

2 prospects · 2022 draft

Each spoke: percentile within the prospect's own position (RB)
KI
Kenneth Walker III
RB · Michigan St.
21.5 yo · 5'9" · 211 lb
IS
Isaiah Spiller
RB · Texas A&M
20.7 yo · 6'0" · 217 lb
Tiebreaker
High confidence
Take Kenneth Walker III over Isaiah Spiller.

Decisive factor: 44-pick gap on Draftanomics projection. Reinforced by a stronger historical comp arc and $9M/yr more in projected second-deal AAV.

Headline metrics

The four numbers a GM checks first.

Kenneth Walker III
Predicted pick
#29
range #1–#58
Bust probability
0%
0%0/5 comps
Consensus rank
#46
on 26 boards
Career arc
Bust
tier · 1st Round
2nd-deal AAV
$12Mmodel
Isaiah Spiller
Predicted pick
#73
range #50–#96
Bust probability
0%
0%0/5 comps
Consensus rank
#67
on 24 boards
Career arc
Bust
tier · Day 2
2nd-deal AAV
$4Mmodel

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
  • Kenneth Walker III· RB / WR / TE
  • Isaiah Spiller· RB / WR / TE
Axis leaders
  • ProductionKenneth Walker III0
  • AthleticismKenneth Walker III39
  • AgeIsaiah Spiller77
  • ConsensusKenneth Walker III51
  • Per-play impact (PPA)Kenneth Walker III50
  • Breakout ageKenneth Walker III50
  • WorkloadKenneth Walker III100
  • RAS × productionKenneth Walker III0

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.
Kenneth Walker III
  • Marlon Mack
    RB · #143
    Bust
  • Christian McCaffrey
    RB · #8
    Bust
  • Miles Sanders
    RB · #53
    Starter
  • Cam Akers
    RB · #52
    Contributor
  • Kerryon Johnson
    RB · #43
    Contributor
Isaiah Spiller
  • David Montgomery
    RB · #73
    Starter
  • D'Andre Swift
    RB · #35
    Starter
  • Derrius Guice
    RB · #59
    Bust
  • D'Onta Foreman
    RB · #89
    Bust
  • Wayne Gallman
    RB · #140
    Bust

Risk and opportunity flags

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

Kenneth Walker III
Risks
  • Comp group bust rate
    2 of 3 closest comps with NFL outcomes washed out: Marlon Mack, Christian McCaffrey. The neighborhood in feature space is dangerous.
  • Negative per-play impact
    PPA avg_all 0.236 — per-snap contribution is below-average for the position. Volume stats overstate the impact.
Opportunities
  • Breakout production arc
    Career trajectory in rushing yards: 579 → 579 → 1636. Production rose every season — the kind of upward arc that often continues into the league.
Isaiah Spiller
Risks
  • Average-to-below athletic profile
    RAS 4.28 (42th percentile at RB). Athleticism is average at best for the position.
  • Comp group bust rate
    3 of 5 closest comps with NFL outcomes washed out: Derrius Guice, D'Onta Foreman, Wayne Gallman. The neighborhood in feature space is dangerous.
  • Negative per-play impact
    PPA avg_all 0.158 — per-snap contribution is below-average for the position. Volume stats overstate the impact.
Opportunities
No standout upside flags.

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
Kenneth Walker IIIIsaiah Spiller· solid = actuals, dashed = forecast

Verdict

The model's plain-English read.

Kenneth Walker III

Draftanomics projects Kenneth Walker III (age 21.5 at draft) as a first-round pick at #29 (range #1-#58, very wide band — too little on him yet to project tightly). Bust probability sits at 0% — low. The comp set is dangerous: 2 of 3 closest comps with known NFL outcomes washed out as backups or busts. Closest comps: Marlon Mack (Bust), Christian McCaffrey (Bust), Miles Sanders (Starter). Ceiling is Miles Sanders (Starter); floor is Cam Akers (Contributor). Career trajectory in rushing yards: 579 → 579 → 1636. Production rose every season — the kind of upward arc that often continues into the league. 2 of 3 closest comps with NFL outcomes washed out: Marlon Mack, Christian McCaffrey. The neighborhood in feature space is dangerous. The call is a value lean: #29 against a consensus #48 is a 19-spot edge — enough to move him up the queue, not enough to reach a round early, with comp group bust rate the tax on that edge.

Isaiah Spiller

Draftanomics projects Isaiah Spiller (age 20.7 at draft) as a third-round / early Day 3 pick at #73 (range #50-#96, wide band). Bust probability sits at 0% — low. The comp set is dangerous: 3 of 5 closest comps with known NFL outcomes washed out as backups or busts. Closest comps: David Montgomery (Starter), D'Andre Swift (Starter), Derrius Guice (Bust). Ceiling is D'Andre Swift (Starter); floor is David Montgomery (Starter). 3 of 5 closest comps with NFL outcomes washed out: Derrius Guice, D'Onta Foreman, Wayne Gallman. The neighborhood in feature space is dangerous. The call is a hold at slot: the model's #73 sits within 6 spots of the room's #67 — no market edge to chase, so take him where he sits, and let the 0% bust probability break ties on draft day.