Kelle
Roos
GKNetherlands · Kilmarnock FC
Player dossierPremiership
KelleRoos
GKGoalkeeperGoalkeeper
- Club
- Kilmarnock FC
- League
- Premiership
- Nationality
- Netherlands
- Age
- 33
- Height
- 196 cm
- Foot
- Right
- Valued
- 20 May 2026
PremiershipReading the valuation
The market values Roos at €100k. Model A, which never saw Roos during training, estimates €83k: the market value is 21% above that estimate.
That is a factor of ×1.21. 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 €244k, 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
- 14
- Minutes
- 1,290
- Started
- 14/14
- Min / app
- 92
- Cards
- 0Y 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 Roos…
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 €100k
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 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
100% this player100% goalkeeper median62nd 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
- €50k
- Sept 2012
- Peak
- €1.5M
- Oct 2019
- Model target
- €100k
- May 2026
- Valuations
- 25
- 7 club changes
May 2026: €100k, Kilmarnock FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2012-09-01 | €50k | NEC Nijmegen |
| 2013-06-18 | €50k | NEC Nijmegen |
| 2015-02-24 | €50k | Derby County |
| 2015-09-24 | €100k | Derby County |
| 2017-02-27 | €100k | Derby County |
| 2017-09-18 | €100k | Port Vale FC |
| 2018-09-24 | €100k | Derby County |
| 2019-06-28 | €750k | Derby County |
| 2019-10-17 | €1.5M | Derby County |
| 2020-02-27 | €1M | Derby County |
| 2020-04-08 | €800k | Derby County |
| 2020-10-15 | €400k | Derby County |
| 2021-03-10 | €400k | Derby County |
| 2021-06-30 | €500k | Derby County |
| 2021-11-24 | €500k | Derby County |
| 2022-05-13 | €500k | Derby County |
| 2022-12-13 | €450k | Aberdeen FC |
| 2023-06-26 | €600k | Aberdeen FC |
| 2023-12-05 | €650k | Aberdeen FC |
| 2024-05-30 | €500k | Aberdeen FC |
| 2024-12-19 | €450k | US Triestina |
| 2025-06-19 | €300k | US Triestina |
| 2025-11-26 | €275k | Notts County |
| 2026-03-05 | €200k | Kilmarnock FC |
| 2026-05-20 | €100k | Kilmarnock FC |
Audit context group-level, not about this player
- Audit group
- UEFA
- Population gap, Model A
- +0.093 95% CI +0.063 to +0.124
- This player, market vs held-out A
- +0.188
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 7% of the 311 Premiership players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 3% of the 485 goalkeepers.
See them in the Explorer →Where Roos appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- BainGKFalkirk FC · Premiership€100k
- ShinnieDMAberdeen FC · Premiership€100k
- WilsonCBLivingston FC · Premiership€100k
- HoltCMSt. Johnstone FC · Premiership€100k
- PasveerGKHeracles Almelo · goalkeepers€100k
- FernándezGKDeportivo Alavés · goalkeepers€100k
- TaşkıranGKAlanyaspor · goalkeepers€100k
- RibeiroGKCF Estrela Amadora · goalkeepers€100k
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).