Talles
Costa
CMBrazil · Polissya Zhytomyr
Player dossierPremier Liha
TallesCosta
CMCentral MidfieldMidfield
- Club
- Polissya Zhytomyr
- League
- Premier Liha
- Nationality
- Brazil
- Age
- 23
- Height
- 176 cm
- Foot
- Right
- Valued
- 18 Dec 2025
Premier LihaReading the valuation
The market values Costa at €1M. Model A, which never saw Costa during training, estimates €1.4M: the market value is 29% below that estimate.
That is a factor of ×1.41. 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 €6.1M, 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
- 46
- Minutes
- 2,370
- Goals
- 1
- Assists
- 6
- Started
- 25/46
- Min / app
- 52
- Cards
- 11Y 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 Costa…
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 €1M
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)
Assists per 90
Club assists per 90 minutes in the same window.
0.23 this player0.09 midfielder median89th 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
- €1.2M
- May 2021
- Peak
- €2M
- Nov 2022
- Model target
- €1M
- Dec 2025
- Valuations
- 12
- 1 club change
Dec 2025: €1M, Polissya Zhytomyr. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-05-28 | €1.2M | São Paulo Futebol Clube |
| 2021-12-17 | €1.2M | São Paulo Futebol Clube |
| 2022-04-06 | €1.2M | São Paulo Futebol Clube |
| 2022-08-19 | €1.2M | São Paulo Futebol Clube |
| 2022-11-14 | €2M | São Paulo Futebol Clube |
| 2023-04-07 | €2M | São Paulo Futebol Clube |
| 2023-07-25 | €2M | São Paulo Futebol Clube |
| 2023-12-11 | €2M | São Paulo Futebol Clube |
| 2024-06-06 | €1.8M | Polissya Zhytomyr |
| 2024-12-17 | €1.5M | Polissya Zhytomyr |
| 2025-06-10 | €1M | Polissya Zhytomyr |
| 2025-12-18 | €1M | Polissya Zhytomyr |
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
- −0.345
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 →Premier Liha414 players · median €400k
Valued above 77% of the 414 Premier Liha players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 32% of the 1,687 midfielders.
See them in the Explorer →Where Costa appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- KaravaevRBDynamo Kyiv · Premier Liha€1M
- YarmolenkoRWDynamo Kyiv · Premier Liha€1M
- KravchenkoRBPolissya Zhytomyr · Premier Liha€1M
- AntyukhRWMetalist 1925 Kharkiv · Premier Liha€1M
- ParejoCMVillarreal CF · midfielders€1M
- DemirbayCMKasimpasa · midfielders€1M
- Oxlade-ChamberlainCMCeltic FC · midfielders€1M
- VecinoCMCelta de Vigo · midfielders€1M
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).