Equi
Fernández
DMArgentina · Bayer 04 Leverkusen
Player dossierBundesliga
EquiFernández
DMDefensive MidfieldMidfield
- Club
- Bayer 04 Leverkusen
- League
- Bundesliga
- Nationality
- Argentina
- Age
- 23
- Height
- 178 cm
- Foot
- Left
- Valued
- 27 May 2026
BundesligaReading the valuation
The market values Fernández at €20M. Model A, which never saw Fernández during training, estimates €10M: the market value is 101% above that estimate.
That is a factor of ×2.01. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.
Without league and club, Model B estimates €3.2M, 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
- 30
- Minutes
- 1,457
- Goals
- 0
- Assists
- 1
- Started
- 17/30
- Min / app
- 49
- Cards
- 2Y 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 Fernández…
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 €20M
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)
European club minutes
Share of minutes played in UEFA club competitions.
30% this player0% midfielder median96th 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
- €350k
- Aug 2019
- Peak
- €25M
- Oct 2025
- Model target
- €20M
- May 2026
- Valuations
- 18
- 5 club changes
May 2026: €20M, Bayer 04 Leverkusen. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2019-08-06 | €350k | Unknown |
| 2019-12-05 | €500k | Unknown |
| 2020-04-08 | €450k | CA Boca Juniors II |
| 2021-02-08 | €450k | CA Boca Juniors II |
| 2022-05-24 | €3M | Club Atlético Tigre |
| 2022-09-06 | €4.5M | Club Atlético Tigre |
| 2022-10-26 | €5M | Club Atlético Tigre |
| 2023-07-04 | €5.5M | CA Boca Juniors |
| 2023-10-04 | €7M | CA Boca Juniors |
| 2023-12-19 | €8M | CA Boca Juniors |
| 2024-03-11 | €9M | CA Boca Juniors |
| 2024-06-12 | €14M | CA Boca Juniors |
| 2024-12-13 | €12M | Al-Qadsiah FC |
| 2025-05-27 | €12M | Al-Qadsiah FC |
| 2025-10-14 | €25M | Bayer 04 Leverkusen |
| 2025-12-19 | €25M | Bayer 04 Leverkusen |
| 2026-03-20 | €22M | Bayer 04 Leverkusen |
| 2026-05-27 | €20M | Bayer 04 Leverkusen |
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
- +0.697
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 →Bundesliga451 players · median €5M
Valued above 82% of the 451 Bundesliga players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 88% of the 1,687 midfielders.
See them in the Explorer →Where Fernández appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- GrimaldoLBBayer 04 Leverkusen · Bundesliga€20M
- GarcíaCMBayer 04 Leverkusen · Bundesliga€20M
- BurgerDMTSG 1899 Hoffenheim · Bundesliga€20M
- ReitzCMBorussia Mönchengladbach · Bundesliga€20M
- MaddisonAMTottenham Hotspur · midfielders€20M
- SchoutenDMPSV Eindhoven · midfielders€20M
- BentancurDMTottenham Hotspur · midfielders€20M
- WeahRMOlympique Marseille · midfielders€20M
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).