Joel Chima
Fujita
CMJapan · FC St. Pauli
Player dossierBundesliga
Joel ChimaFujita
CMCentral MidfieldMidfield
- Club
- FC St. Pauli
- League
- Bundesliga
- Nationality
- Japan
- Age
- 24
- Height
- 175 cm
- Foot
- Right
- Valued
- 27 May 2026
BundesligaReading the valuation
The market values Fujita at €10M. Model A, which never saw Fujita during training, estimates €9.1M: the market value is 10% above that estimate.
That is a factor of ×1.10. 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 €6M, 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
- 63
- Minutes
- 5,471
- Goals
- 1
- Assists
- 7
- Started
- 62/63
- Min / app
- 87
- Cards
- 13Y 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 Fujita…
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 €10M
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 1,687 midfielders
Dashed ring: the midfielder median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
98% this player69% midfielder median98th 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
- €500k
- Jan 2021
- Peak
- €10M
- Mar 2026
- Model target
- €10M
- May 2026
- Valuations
- 16
- 3 club changes
May 2026: €10M, FC St. Pauli. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-01-29 | €500k | Tokushima Vortis |
| 2021-06-29 | €500k | Tokushima Vortis |
| 2022-01-14 | €600k | Yokohama F. Marinos |
| 2022-06-28 | €700k | Yokohama F. Marinos |
| 2023-01-06 | €850k | Yokohama F. Marinos |
| 2023-06-28 | €850k | Yokohama F. Marinos |
| 2023-12-19 | €800k | Sint-Truidense VV |
| 2024-06-04 | €900k | Sint-Truidense VV |
| 2024-10-02 | €1.3M | Sint-Truidense VV |
| 2024-12-11 | €1.8M | Sint-Truidense VV |
| 2025-03-26 | €2.2M | Sint-Truidense VV |
| 2025-06-12 | €3M | Sint-Truidense VV |
| 2025-10-14 | €6M | FC St. Pauli |
| 2025-12-19 | €8M | FC St. Pauli |
| 2026-03-20 | €10M | FC St. Pauli |
| 2026-05-27 | €10M | FC St. Pauli |
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
- +0.096
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 →Bundesliga451 players · median €5M
Valued above 65% of the 451 Bundesliga players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 78% of the 1,687 midfielders.
See them in the Explorer →Where Fujita appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- FriedlCBSV Werder Bremen · Bundesliga€10M
- EggesteinCMSC Freiburg · Bundesliga€10M
- SchlagerCMRB Leipzig · Bundesliga€10M
- LienhartCBSC Freiburg · Bundesliga€10M
- KovacicCMManchester City · midfielders€10M
- ZielinskiCMInter Milan · midfielders€10M
- TolissoCMOlympique Lyon · midfielders€10M
- LobotkaDMSSC Napoli · midfielders€10M
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).