Reiss
Nelson
LWEngland · Brentford FC
Image: FootyLogos
Player dossierPremier League
ReissNelson
LWLeft WingerAttack
- Club
- Brentford FC
- League
- Premier League
- Nationality
- England
- Age
- 26
- Height
- 175 cm
- Foot
- Right
- Valued
- 3 Jun 2026
Reading the valuation
The market values Nelson at €8M. Model A, which never saw Nelson during training, estimates €7.1M: the market value is 13% above that estimate.
That is a factor of ×1.13. 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 €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
- 26
- Minutes
- 827
- Goals
- 2
- Assists
- 3
- Started
- 8/26
- Min / app
- 32
- Cards
- 1Y 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 Nelson…
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 1,583 attackers
Dashed ring: the attacker median (50th percentile)
Assists per 90
Club assists per 90 minutes in the same window.
0.33 this player0.15 attacker median93rd 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
- €400k
- Sept 2018
- Peak
- €18M
- Dec 2024
- Model target
- €8M
- Jun 2026
- Valuations
- 21
- 5 club changes
Jun 2026: €8M, Brentford FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2018-09-03 | €400k | TSG 1899 Hoffenheim |
| 2018-10-22 | €7.5M | TSG 1899 Hoffenheim |
| 2018-12-18 | €17M | TSG 1899 Hoffenheim |
| 2019-06-05 | €17M | TSG 1899 Hoffenheim |
| 2019-12-10 | €14M | Arsenal FC |
| 2020-04-08 | €12.5M | Arsenal FC |
| 2020-10-13 | €12.5M | Arsenal FC |
| 2021-03-18 | €10M | Arsenal FC |
| 2021-06-08 | €9M | Arsenal FC |
| 2022-01-05 | €7M | Feyenoord Rotterdam |
| 2022-03-17 | €5.5M | Feyenoord Rotterdam |
| 2022-06-08 | €6.5M | Feyenoord Rotterdam |
| 2022-11-03 | €7M | Arsenal FC |
| 2023-06-20 | €12M | Arsenal FC |
| 2023-12-19 | €15M | Arsenal FC |
| 2024-05-27 | €15M | Arsenal FC |
| 2024-12-16 | €18M | Fulham FC |
| 2025-05-30 | €16M | Fulham FC |
| 2025-12-09 | €14M | Brentford FC |
| 2026-03-09 | €12M | Brentford FC |
| 2026-06-03 | €8M | Brentford FC |
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
- +0.119
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 →Premier League555 players · median €18M
Valued above 27% of the 555 Premier League players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 74% of the 1,583 attackers.
See them in the Explorer →Where Nelson appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- XhakaDMSunderland AFC · Premier League€8M
- MaguireCBManchester United · Premier League€8M
- ShawLBManchester United · Premier League€8M
- ChristieCMAFC Bournemouth · Premier League€8M
- GriezmannSSAtlético de Madrid · attackers€8M
- KleindienstCFBorussia Mönchengladbach · attackers€8M
- ZivkovicRWPAOK Thessaloniki · attackers€8M
- BogaLWJuventus FC · attackers€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).