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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
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Side-by-side comparison

Backtest

3 prospects · 2017 draft

Each spoke: percentile within the prospect's own position (RB)
DP
Donnel Pumphrey
RB · San Diego St.
22.4 yo · 5'8" · 176 lb
MM
Marlon Mack
RB · South Florida
21.1 yo · 5'11" · 213 lb
JC
James Conner
RB · Pittsburgh
22.0 yo · 6'1" · 233 lb

Headline metrics

The four numbers a GM checks first.

Donnel Pumphrey
Predicted pick
#148
range #118–#178
Bust probability
66%
0%0/5 comps
Consensus rank
#154
on 1 board
Career arc
Bust
tier · Day 3
2nd-deal AAV
$8Mmodel
Marlon Mack
Predicted pick
#112
range #83–#141
Bust probability
0%
0%0/5 comps
Consensus rank
#62
on 4 boards
Career arc
Bust
tier · Day 3
2nd-deal AAV
$4Mmodel
James Conner
Predicted pick
#233
range #186–#280
Bust probability
0%
0%0/4 comps
Consensus rank
#142
on 1 board
Career arc
Bust
tier · Day 3
2nd-deal AAV
$7Mmodel

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
  • Donnel Pumphrey· RB / WR / TE
  • Marlon Mack· RB / WR / TE
  • James Conner· RB / WR / TE
Axis leaders
  • ProductionDonnel Pumphrey41
  • AthleticismMarlon Mack33
  • AgeDonnel Pumphrey89
  • ConsensusDonnel Pumphrey21
  • Per-play impact (PPA)Donnel Pumphrey50
  • Breakout ageDonnel Pumphrey50
  • WorkloadDonnel Pumphrey100
  • RAS × productionDonnel Pumphrey50

Comp overlap

Top five historical comps per prospect. Shared comps highlighted.

Shared comps
  • David CobbRB · Bust→ shared byDonnel PumphreyMarlon MackJames Conner
  • Josh RobinsonRB · Bust→ shared byDonnel PumphreyMarlon MackJames Conner
  • Jeremy LangfordRB · Starter→ shared byDonnel PumphreyMarlon MackJames Conner
  • Jay AjayiRB · Franchise→ shared byDonnel PumphreyMarlon Mack
Donnel Pumphrey
  • David Cobbshared
    RB · #138
    Bust
  • Josh Robinsonshared
    RB · #205
    Bust
  • Jeremy Langfordshared
    RB · #106
    Starter
  • Jay Ajayishared
    RB · #149
    Franchise
  • Marcus Murphy
    RB · #230
    Contributor
Marlon Mack
  • David Cobbshared
    RB · #138
    Bust
  • Tevin Coleman
    RB · #73
    Franchise
  • Josh Robinsonshared
    RB · #205
    Bust
  • Jay Ajayishared
    RB · #149
    Franchise
  • Jeremy Langfordshared
    RB · #106
    Starter
James Conner
  • David Cobbshared
    RB · #138
    Bust
  • Josh Robinsonshared
    RB · #205
    Bust
  • Jeremy Langfordshared
    RB · #106
    Starter
  • Kenny Hilliard
    RB · #235
    TBD
  • T.J. Yeldon
    RB · #36
    Franchise

Risk and opportunity flags

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

Donnel Pumphrey
Risks
  • Missed entire rookie season
    Drafted #132 by PHI in 2017 but recorded ZERO regular-season NFL snaps. Year-1 absence is one of the strongest single-signal bust predictors we have.
  • Comp group has bust risk
    2 of 4 closest comps with NFL outcomes ended up backups or busts: David Cobb, Josh Robinson. Mixed signal from history.
  • Negative per-play impact
    PPA avg_all 0.256 — per-snap contribution is below-average for the position. Volume stats overstate the impact.
Opportunities
  • Consensus says higher
    2 boards have him at mean rank #106; model has him #148 — a 42-spot fade. Analysts converging this much above the model is a tell that the model is undervaluing him.
Marlon Mack
Risks
  • Comp group has bust risk
    2 of 5 closest comps with NFL outcomes ended up backups or busts: David Cobb, Josh Robinson. Mixed signal from history.
  • Negative per-play impact
    PPA avg_all 0.239 — per-snap contribution is below-average for the position. Volume stats overstate the impact.
Opportunities
  • Consensus says higher
    5 boards have him at mean rank #78; model has him #112 — a 34-spot fade. Analysts converging this much above the model is a tell that the model is undervaluing him.
  • Promising comp group
    3 of 5 closest comps with NFL outcomes hit Starter-or-better: Tevin Coleman, Jay Ajayi, Jeremy Langford.
James Conner
Risks
  • Comp group has bust risk
    2 of 4 closest comps with NFL outcomes ended up backups or busts: David Cobb, Josh Robinson. Mixed signal from history.
  • Negative per-play impact
    PPA avg_all 0.189 — per-snap contribution is below-average for the position. Volume stats overstate the impact.
Opportunities
  • Consensus says higher
    2 boards have him at mean rank #107; model has him #233 — a 126-spot fade. Analysts converging this much above the model is a tell that the model is undervaluing him.

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
Donnel PumphreyMarlon MackJames Conner· solid = actuals, dashed = forecast

Verdict

The model's plain-English read.

Donnel Pumphrey

Draftanomics projects Donnel Pumphrey (age 22.4 at draft) as a mid-round flyer at #148 (range #118-#178, very wide band — too little on him yet to project tightly). Bust probability sits at 66% — scary. The comp set is mixed: 2 starters-or-better vs 2 backups-or-busts among the 4 comps with known outcomes. Closest comps: David Cobb (Bust), Josh Robinson (Bust), Jeremy Langford (Starter). Ceiling is Jay Ajayi (Franchise); floor is Marcus Murphy (Contributor). Drafted #132 by PHI in 2017 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 genuine fade: the room's consensus prices him around #106 and the model won't take him before #148 — a 42-spot markdown. The discount is earned — missed entire rookie season leads the case against.

Marlon Mack

Draftanomics projects Marlon Mack (age 21.1 at draft) as a mid-round flyer at #112 (range #83-#141, very wide band — too little on him yet to project tightly). Bust probability sits at 0% — low. The comp set is strong: 3 of 5 closest comps with known NFL outcomes became starters or better. Closest comps: David Cobb (Bust), Tevin Coleman (Franchise), Josh Robinson (Bust). Ceiling is Tevin Coleman (Franchise); floor is Jeremy Langford (Starter). School SP+ 9.8 (AMERICAN ATHLETIC). Strong program among non-Power-5 — the prospect dominated against decent competition. 2 of 5 closest comps with NFL outcomes ended up backups or busts: David Cobb, Josh Robinson. Mixed signal from history. The call is a genuine fade: the room's consensus prices him around #78 and the model won't take him before #112 — a 34-spot markdown. The discount is earned — comp group has bust risk leads the case against.

James Conner

Draftanomics projects James Conner (age 22.0 at draft) as a Day 3 dart throw at #233 (range #186-#280, very wide band — too little on him yet to project tightly). Bust probability sits at 0% — low. The comp set is mixed: 2 starters-or-better vs 2 backups-or-busts among the 4 comps with known outcomes. Closest comps: David Cobb (Bust), Josh Robinson (Bust), Jeremy Langford (Starter). Ceiling is T.J. Yeldon (Franchise); floor is Kenny Hilliard. 2 of 4 closest comps with NFL outcomes ended up backups or busts: David Cobb, Josh Robinson. Mixed signal from history. The call is a genuine fade: the room's consensus prices him around #107 and the model won't take him before #233 — a 126-spot markdown. The discount is earned — comp group has bust risk leads the case against.