Derek
Cornelius
CBCanada · Rangers FC
Player dossierPremiership
DerekCornelius
CBCentre-BackDefender
- Club
- Rangers FC
- League
- Premiership
- Nationality
- Canada
- Age
- 28
- Height
- 186 cm
- Foot
- Left
- Valued
- 20 May 2026
PremiershipReading the valuation
The market values Cornelius at €2.5M. Model A, which never saw Cornelius during training, estimates €2.3M: the market value is 9% above that estimate.
That is a factor of ×1.09. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.
Without league and club, Model B estimates €1.7M, further from the market. Model B is usually further off (typical miss ×2.07): league and club explain much of how the market prices players.
A gap describes the model's arithmetic for this player's inputs, not what the player is worth.
- Apps
- 33
- Minutes
- 2,213
- Goals
- 1
- Assists
- 1
- Started
- 25/33
- Min / app
- 67
- Cards
- 10Y 0R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Cornelius…
SHAP describes the model's arithmetic for this player's inputs, not what causes market value. Model B can be explained only by the live service; Model A also has a published explanation for the research players.
Model A vs Model B against the observed €2.5M
Checking APIAsking the prediction API…
Held-out estimates come from cross-validation, with this player outside the training data: the honest comparison. Served models were refitted on every player, this one included, so they sit closer to the market. Shaded band: Model A's typical miss (×1.50 either way).
Player traitspercentiles vs 2,065 defenders
Dashed ring: the defender median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
8% this player0% defender median70th percentile
No passing, progression or defensive actions exist in the dataset, so no trait claims to measure them.
Valuation history every Transfermarkt valuation on record
- First valuation
- €25k
- Aug 2014
- Peak
- €5M
- Mar 2025
- Model target
- €2.5M
- May 2026
- Valuations
- 31
- 6 club changes
May 2026: €2.5M, Rangers FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2014-08-18 | €25k | VfB Lübeck |
| 2015-02-08 | €25k | VfB Lübeck |
| 2015-07-14 | €25k | VfB Lübeck |
| 2015-11-04 | €25k | VfB Lübeck |
| 2016-02-25 | €25k | VfB Lübeck |
| 2016-07-27 | €25k | VfB Lübeck |
| 2017-05-04 | €50k | FK Javor-Matis Ivanjica |
| 2018-01-10 | €150k | FK Javor-Matis Ivanjica |
| 2018-07-02 | €200k | FK Javor-Matis Ivanjica |
| 2019-01-10 | €150k | FK Javor-Matis Ivanjica |
| 2019-05-27 | €200k | Vancouver Whitecaps FC |
| 2019-11-30 | €550k | Vancouver Whitecaps FC |
| 2020-04-08 | €450k | Vancouver Whitecaps FC |
| 2020-08-26 | €550k | Vancouver Whitecaps FC |
| 2020-12-18 | €500k | Vancouver Whitecaps FC |
| 2021-07-09 | €400k | Vancouver Whitecaps FC |
| 2021-11-01 | €500k | Panetolikos |
| 2022-02-22 | €700k | Panetolikos |
| 2022-06-09 | €800k | Panetolikos |
| 2022-11-07 | €800k | Panetolikos |
| 2023-06-27 | €1.2M | Malmö FF |
| 2023-09-13 | €1.8M | Malmö FF |
| 2023-12-08 | €2.5M | Malmö FF |
| 2024-06-13 | €2.8M | Malmö FF |
| 2024-10-07 | €4M | Olympique Marseille |
| 2024-12-10 | €4M | Olympique Marseille |
| 2025-03-24 | €5M | Olympique Marseille |
| 2025-06-03 | €5M | Olympique Marseille |
| 2025-12-10 | €4M | Rangers FC |
| 2026-03-05 | €3M | Rangers FC |
| 2026-05-20 | €2.5M | Rangers FC |
Audit context group-level, not about this player
- Audit group
- non-UEFA
- Population gap, Model A
- +0.093 95% CI +0.063 to +0.124
- This player, market vs held-out A
- +0.088
The group comes from first-listed citizenship and is never a model input. Across the population, non-UEFA players' market values sit about 10% above Model A's held-out estimates, relative to UEFA players in the same leagues. One player's residual says nothing about that pattern (typical miss ×1.50), and none of it is evidence of discrimination: the target may itself be biased. Open the Fairness Audit
In context observed value among comparable players in this build
All players in the Terminal →Premiership311 players · median €400k
Valued above 86% of the 311 Premiership players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 54% of the 2,065 defenders.
See them in the Explorer →Where Cornelius appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- SterlingRBRangers FC · Premiership€2.5M
- BajramiAMRangers FC · Premiership€2.5M
- AaronsRBRangers FC · Premiership€2.5M
- MiovskiCFRangers FC · Premiership€2.5M
- GraditCBRC Lens · defenders€2.5M
- MainkaCB1.FC Heidenheim 1846 · defenders€2.5M
- CoufalRBTSG 1899 Hoffenheim · defenders€2.5M
- StarkCBSV Werder Bremen · defenders€2.5M
Counts and ranks of observed Transfermarkt values only; model errors are never ranked here. Full player export: Every player in the modelling population (D-011).