Júnior
Mendieta
LWArgentina · Asteras Aktor
Player dossierSuper League
JúniorMendieta
LWLeft WingerAttack
- Club
- Asteras Aktor
- League
- Super League
- Nationality
- Argentina
- Age
- 32
- Height
- 170 cm
- Foot
- Right
- Valued
- 4 Jun 2026
Super LeagueReading the valuation
The market values Mendieta at €350k. Model A, which never saw Mendieta during training, estimates €328k: the market value is 7% above that estimate.
That is a factor of ×1.07. 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 €381k, 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
- 1,610
- Goals
- 4
- Assists
- 2
- Started
- 19/34
- Min / app
- 47
- Cards
- 8Y 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 Mendieta…
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 €350k
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.
56% this player59% attacker median45th 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
- €250k
- Apr 2019
- Peak
- €1M
- May 2023
- Model target
- €350k
- Jun 2026
- Valuations
- 16
- 6 club changes
Jun 2026: €350k, Asteras Aktor. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2019-04-23 | €250k | Club Deportivo Morón |
| 2020-02-17 | €350k | AMSD Atlético de Rafaela |
| 2020-04-08 | €300k | AMSD Atlético de Rafaela |
| 2021-01-14 | €300k | Stellenbosch FC |
| 2021-06-15 | €350k | Stellenbosch FC |
| 2022-01-15 | €425k | Stellenbosch FC |
| 2022-06-30 | €475k | Stellenbosch FC |
| 2023-02-03 | €750k | Stellenbosch FC |
| 2023-05-30 | €1M | Stellenbosch FC |
| 2024-01-05 | €1M | Mamelodi Sundowns FC |
| 2024-06-11 | €850k | Mamelodi Sundowns FC |
| 2024-09-26 | €700k | Volos NFC |
| 2024-12-18 | €600k | Volos NFC |
| 2025-06-24 | €500k | Al-Faisaly FC |
| 2025-12-12 | €450k | Asteras Aktor |
| 2026-06-04 | €350k | Asteras Aktor |
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
- +0.066
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 25% of the 356 Super League players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 10% of the 1,583 attackers.
See them in the Explorer →Where Mendieta appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- SagalLWAE Larisa · Super League€350k
- DeleticRWPOT Iraklis Thessaloniki · Super League€350k
- StaikosDMAE Larisa · Super League€350k
- JuanpiAMVolos NFC · Super League€350k
- MbenzaRWRoyal Charleroi SC · attackers€350k
- SandeCFSC Cambuur Leeuwarden · attackers€350k
- NlunduluCFSt. Mirren FC · attackers€350k
- SynytsyaRWLivyi Bereg Kyiv · attackers€350k
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).