Trevor
Carson
Player dossierPremiership
TrevorCarson
GKGoalkeeperGoalkeeper
- Club
- Ross County FC
- League
- Premiership
- Nationality
- Northern Ireland
- Age
- 38
- Height
- 185 cm
- Foot
- Right
- Valued
- 21 May 2026
PremiershipReading the valuation
The market values Carson at €25k. Model A, which never saw Carson during training, estimates €34k: the market value is 26% below that estimate.
That is a factor of ×1.36. 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 €85k, 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
- 20
- Minutes
- 1,800
- Started
- 20/20
- Min / app
- 90
- Cards
- 1Y 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 Carson…
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 €25k
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
- €100k
- Oct 2006
- Peak
- €550k
- Aug 2019
- Model target
- €25k
- May 2026
- Valuations
- 24
- 6 club changes
May 2026: €25k, Ross County FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2006-10-15 | €100k | Sunderland AFC |
| 2010-01-24 | €250k | Sunderland AFC |
| 2011-08-08 | €250k | Sunderland AFC |
| 2012-06-24 | €250k | Sunderland AFC |
| 2016-08-05 | €250k | Hartlepool United |
| 2018-03-04 | €250k | Motherwell FC |
| 2018-08-08 | €350k | Motherwell FC |
| 2019-01-03 | €500k | Motherwell FC |
| 2019-08-20 | €550k | Motherwell FC |
| 2020-02-05 | €400k | Motherwell FC |
| 2020-04-08 | €325k | Motherwell FC |
| 2020-07-21 | €300k | Motherwell FC |
| 2021-01-18 | €350k | Motherwell FC |
| 2021-06-28 | €350k | Motherwell FC |
| 2021-12-31 | €350k | Dundee United FC |
| 2022-06-27 | €350k | Dundee United FC |
| 2022-12-13 | €350k | St. Mirren FC |
| 2023-06-26 | €275k | St. Mirren FC |
| 2023-12-05 | €200k | Dundee FC |
| 2024-05-30 | €150k | Dundee FC |
| 2024-12-03 | €100k | Dundee FC |
| 2025-06-17 | €100k | Dundee FC |
| 2025-12-10 | €50k | Ross County FC |
| 2026-05-21 | €25k | Ross County 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
- −0.307
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
The joint lowest observed value among 311 Premiership players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
The joint lowest observed value among 485 goalkeepers.
See them in the Explorer →Where Carson appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- GrahamCFFalkirk FC · Premiership€25k
- McGowanCBLivingston FC · Premiership€25k
- ArfieldCMLivingston FC · Premiership€25k
- BokilaCFLivingston FC · Premiership€25k
- StorchGKRanders FC · goalkeepers€25k
- GordonGKHeart of Midlothian FC · goalkeepers€50k
- HansenGKAarhus GF · goalkeepers€50k
- LösslGKFC Midtjylland · goalkeepers€50k
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).