Bruno
Viana
CBBrazil · Alanyaspor
Player dossierSüper Lig
BrunoViana
CBCentre-BackDefender
- Club
- Alanyaspor
- League
- Süper Lig
- Nationality
- Brazil
- Age
- 31
- Height
- 186 cm
- Foot
- Right
- Valued
- 21 May 2026
Süper LigReading the valuation
The market values Viana at €400k. Model A, which never saw Viana during training, estimates €440k: the market value is 9% below 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 €707k, 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
- 34
- Minutes
- 2,754
- Goals
- 0
- Assists
- 1
- Started
- 31/34
- Min / app
- 81
- Cards
- 10Y 2R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Viana…
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 €400k
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 2,065 defenders
Dashed ring: the defender median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
91% this player83% defender median73rd 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
- May 2016
- Peak
- €7M
- Jan 2021
- Model target
- €400k
- May 2026
- Valuations
- 27
- 8 club changes
May 2026: €400k, Alanyaspor. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2016-05-27 | €500k | Cruzeiro Esporte Clube |
| 2016-12-21 | €1M | Olympiacos Piraeus |
| 2017-05-11 | €1.8M | Olympiacos Piraeus |
| 2018-02-07 | €2.5M | SC Braga |
| 2018-06-13 | €4M | SC Braga |
| 2019-01-11 | €5M | SC Braga |
| 2019-06-07 | €6M | SC Braga |
| 2019-12-30 | €6M | SC Braga |
| 2020-04-08 | €4.8M | SC Braga |
| 2020-08-17 | €5.5M | SC Braga |
| 2021-01-28 | €7M | SC Braga |
| 2021-05-28 | €7M | CR Flamengo |
| 2021-09-10 | €3.5M | CR Flamengo |
| 2021-12-17 | €2M | CR Flamengo |
| 2022-05-28 | €1.8M | Wuhan Yangtze |
| 2023-04-07 | €1.8M | Coritiba Foot Ball Club |
| 2023-07-25 | €1.6M | Coritiba Foot Ball Club |
| 2023-12-15 | €1.4M | Al-Hazem SC |
| 2024-06-04 | €1.2M | Al-Hazem SC |
| 2024-10-04 | €1.2M | Gaziantep FK |
| 2024-12-23 | €1.2M | Gaziantep FK |
| 2025-03-20 | €1.1M | Gaziantep FK |
| 2025-06-27 | €900k | Gaziantep FK |
| 2025-10-01 | €800k | Alanyaspor |
| 2025-12-17 | €700k | Alanyaspor |
| 2026-03-05 | €600k | Alanyaspor |
| 2026-05-21 | €400k | Alanyaspor |
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
- −0.095
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 →Süper Lig428 players · median €1.2M
Valued above 15% of the 428 Süper Lig players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 14% of the 2,065 defenders.
See them in the Explorer →Where Viana appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- SavicCBTrabzonspor · Süper Lig€400k
- JeanvierCBKayserispor · Süper Lig€400k
- BingölCMKocaelispor · Süper Lig€400k
- BiraschiCBFatih Karagümrük · Süper Lig€400k
- YoungRBIpswich Town · defenders€400k
- LovrenCBPAOK Thessaloniki · defenders€400k
- VogtCBVfL Bochum · defenders€400k
- BrabecCBRio Ave FC · defenders€400k
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).