Leandro
Barreiro
CMLuxembourg · SL Benfica
Player dossierLiga Portugal
LeandroBarreiro
CMCentral MidfieldMidfield
- Club
- SL Benfica
- League
- Liga Portugal
- Nationality
- Luxembourg
- Age
- 26
- Height
- 174 cm
- Foot
- Right
- Valued
- 28 May 2026
Liga PortugalReading the valuation
The market values Barreiro at €18M. Model A, which never saw Barreiro during training, estimates €21M: the market value is 14% below that estimate.
That is a factor of ×1.17. 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 €25.3M, 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
- 88
- Minutes
- 4,580
- Goals
- 10
- Assists
- 11
- Started
- 45/88
- Min / app
- 52
- 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 Barreiro…
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 €18M
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.
29% this player0% midfielder median95th 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
- €200k
- Oct 2018
- Peak
- €18M
- May 2026
- Model target
- €18M
- May 2026
- Valuations
- 22
- 1 club change
May 2026: €18M, SL Benfica. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2018-10-22 | €200k | 1.FSV Mainz 05 |
| 2018-12-18 | €400k | 1.FSV Mainz 05 |
| 2019-06-05 | €500k | 1.FSV Mainz 05 |
| 2019-12-17 | €500k | 1.FSV Mainz 05 |
| 2020-02-11 | €1.8M | 1.FSV Mainz 05 |
| 2020-03-11 | €3.5M | 1.FSV Mainz 05 |
| 2020-04-08 | €3.2M | 1.FSV Mainz 05 |
| 2020-07-08 | €4M | 1.FSV Mainz 05 |
| 2021-02-10 | €7.5M | 1.FSV Mainz 05 |
| 2021-06-09 | €11M | 1.FSV Mainz 05 |
| 2021-12-22 | €11M | 1.FSV Mainz 05 |
| 2022-03-24 | €9M | 1.FSV Mainz 05 |
| 2022-06-09 | €8M | 1.FSV Mainz 05 |
| 2022-11-09 | €8M | 1.FSV Mainz 05 |
| 2023-03-29 | €10M | 1.FSV Mainz 05 |
| 2023-06-22 | €14M | 1.FSV Mainz 05 |
| 2023-12-14 | €14M | 1.FSV Mainz 05 |
| 2024-05-29 | €17M | 1.FSV Mainz 05 |
| 2024-12-19 | €15M | SL Benfica |
| 2025-05-30 | €15M | SL Benfica |
| 2025-12-18 | €15M | SL Benfica |
| 2026-05-28 | €18M | SL Benfica |
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
- −0.154
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 →Liga Portugal423 players · median €1M
Valued above 92% of the 423 Liga Portugal players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 87% of the 1,687 midfielders.
See them in the Explorer →Where Barreiro appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- HornicekGKSC Braga · Liga Portugal€18M
- CostaRBFC Porto · Liga Portugal€18M
- QuaresmaCBSporting CP · Liga Portugal€17M
- PepêRWFC Porto · Liga Portugal€17M
- RabiotCMAC Milan · midfielders€18M
- GolovinAMAS Monaco · midfielders€18M
- O'RileyCMBrighton & Hove Albion · midfielders€18M
- LuizCMAston Villa · midfielders€18M
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).