Brais
Méndez
AMSpain · Real Sociedad
Player dossierLaLiga
BraisMéndez
AMAttacking MidfieldMidfield
- Club
- Real Sociedad
- League
- LaLiga
- Nationality
- Spain
- Age
- 29
- Height
- 187 cm
- Foot
- Left
- Valued
- 5 Jun 2026
Reading the valuation
The market values Méndez at €8M. Model A, which never saw Méndez during training, estimates €7.4M: the market value is 8% above that estimate.
That is a factor of ×1.08. 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 €11.8M, 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
- 75
- Minutes
- 4,561
- Goals
- 14
- Assists
- 7
- Started
- 56/75
- Min / app
- 61
- Cards
- 10Y 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 Méndez…
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 €8M
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)
Goals per 90
Club goals per 90 minutes played in the two years to the valuation date.
0.28 this player0.08 midfielder median92nd 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 2016
- Peak
- €40M
- Dec 2023
- Model target
- €8M
- Jun 2026
- Valuations
- 31
- 2 club changes
Jun 2026: €8M, Real Sociedad. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2016-08-24 | €100k | Celta Vigo B |
| 2016-10-27 | €200k | Celta Vigo B |
| 2017-02-02 | €250k | Celta Vigo B |
| 2017-06-30 | €250k | Celta Vigo B |
| 2018-01-01 | €500k | Celta Vigo B |
| 2018-03-22 | €1M | Celta Vigo B |
| 2018-05-30 | €3.5M | Celta Vigo B |
| 2018-10-31 | €6M | Celta de Vigo |
| 2018-12-21 | €20M | Celta de Vigo |
| 2019-06-11 | €20M | Celta de Vigo |
| 2019-12-20 | €17.5M | Celta de Vigo |
| 2020-03-05 | €15M | Celta de Vigo |
| 2020-04-08 | €12M | Celta de Vigo |
| 2020-10-08 | €11M | Celta de Vigo |
| 2021-01-05 | €12M | Celta de Vigo |
| 2021-06-10 | €14M | Celta de Vigo |
| 2021-12-30 | €14M | Celta de Vigo |
| 2022-03-21 | €18M | Celta de Vigo |
| 2022-06-03 | €18M | Celta de Vigo |
| 2022-09-23 | €22M | Real Sociedad |
| 2022-11-07 | €30M | Real Sociedad |
| 2023-06-13 | €25M | Real Sociedad |
| 2023-10-13 | €30M | Real Sociedad |
| 2023-12-22 | €40M | Real Sociedad |
| 2024-06-07 | €40M | Real Sociedad |
| 2024-12-27 | €35M | Real Sociedad |
| 2025-03-21 | €28M | Real Sociedad |
| 2025-06-09 | €22M | Real Sociedad |
| 2025-10-02 | €18M | Real Sociedad |
| 2025-12-12 | €12M | Real Sociedad |
| 2026-06-05 | €8M | Real Sociedad |
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
- +0.081
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 →Midfielders, all leagues1,687 players · median €2M
Valued above 74% of the 1,687 midfielders.
See them in the Explorer →Where Méndez appears
- TerminalLaLiga in the Player Explorer
- TerminalLaLiga on the League Landscape
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- GriezmannSSAtlético de Madrid · LaLiga€8M
- LaporteCBAthletic Bilbao · LaLiga€8M
- CanceloRBFC Barcelona · LaLiga€8M
- ChristensenCBFC Barcelona · LaLiga€8M
- BruyneAMSSC Napoli · midfielders€8M
- XhakaDMSunderland AFC · midfielders€8M
- FofanaCMFC Porto · midfielders€8M
- ChristieCMAFC Bournemouth · midfielders€8M
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).