Clayton
CFBrazil · Olympiacos Piraeus
Player dossierSuper League
Clayton
CFCentre-ForwardAttack
- Club
- Olympiacos Piraeus
- League
- Super League
- Nationality
- Brazil
- Age
- 27
- Height
- 184 cm
- Foot
- Right
- Valued
- 4 Jun 2026
Super LeagueReading the valuation
The market values Clayton at €6M. Model A, which never saw Clayton during training, estimates €4.9M: the market value is 24% above that estimate.
That is a factor of ×1.24. 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 €3.9M, 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
- 56
- Minutes
- 4,406
- Goals
- 24
- Assists
- 7
- Started
- 49/56
- Min / app
- 79
- Cards
- 19Y 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 Clayton…
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 €6M
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 1,583 attackers
Dashed ring: the attacker median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
88% this player59% attacker median91st 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
- Aug 2021
- Peak
- €8M
- Dec 2025
- Model target
- €6M
- Jun 2026
- Valuations
- 16
- 5 club changes
Jun 2026: €6M, Olympiacos Piraeus. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-08-12 | €100k | Vila Nova Futebol Clube (GO) |
| 2021-12-03 | €450k | Vila Nova Futebol Clube (GO) |
| 2022-04-06 | €450k | Coritiba Foot Ball Club |
| 2022-11-01 | €600k | Casa Pia AC |
| 2023-06-16 | €400k | Casa Pia AC |
| 2023-09-29 | €700k | Casa Pia AC |
| 2023-12-27 | €700k | Casa Pia AC |
| 2024-03-08 | €2.5M | Clube de Regatas Vasco da Gama |
| 2024-06-17 | €2.5M | Clube de Regatas Vasco da Gama |
| 2024-12-19 | €3.5M | Rio Ave FC |
| 2025-03-31 | €5M | Rio Ave FC |
| 2025-05-30 | €5M | Rio Ave FC |
| 2025-09-30 | €6M | Rio Ave FC |
| 2025-12-18 | €8M | Rio Ave FC |
| 2026-03-06 | €7M | Olympiacos Piraeus |
| 2026-06-04 | €6M | Olympiacos Piraeus |
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
- +0.211
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 →Super League356 players · median €600k
Valued above 95% of the 356 Super League players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 68% of the 1,583 attackers.
See them in the Explorer →Where Clayton appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- GiakoumakisCFPAOK Thessaloniki · Super League€6M
- MoukoudiCBAEK Athens · Super League€6M
- LuizRWOlympiacos Piraeus · Super League€6M
- AndinoLMPanathinaikos · Super League€6M
- LukakuCFSSC Napoli · attackers€6M
- MorataCFComo 1907 · attackers€6M
- AkpomCFIpswich Town · attackers€6M
- TraoréRWWest Ham United · attackers€6M
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).