Jacob
Greaves
CBEngland · Ipswich Town
Image: FootyLogos
Player dossierPremier League
JacobGreaves
CBCentre-BackDefender
- Club
- Ipswich Town
- League
- Premier League
- Nationality
- England
- Age
- 25
- Height
- 193 cm
- Foot
- Left
- Valued
- 3 Dec 2025
Reading the valuation
The market values Greaves at €16M. Model A, which never saw Greaves during training, estimates €11.4M: the market value is 40% above that estimate.
That is a factor of ×1.40. 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 €1.3M, 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
- 26
- Minutes
- 2,279
- Goals
- 1
- Assists
- 0
- Started
- 25/26
- Min / app
- 88
- Cards
- 5Y 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 Greaves…
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 €16M
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.
96% this player83% defender median87th 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
- €600k
- Jun 2021
- Peak
- €20M
- Oct 2024
- Model target
- €16M
- Dec 2025
- Valuations
- 12
- 1 club change
Dec 2025: €16M, Ipswich Town. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-06-30 | €600k | Hull City |
| 2021-11-24 | €1M | Hull City |
| 2022-05-13 | €4.5M | Hull City |
| 2022-09-14 | €6M | Hull City |
| 2022-10-27 | €8M | Hull City |
| 2023-06-01 | €11M | Hull City |
| 2023-12-21 | €14M | Hull City |
| 2024-05-24 | €15M | Hull City |
| 2024-10-01 | €20M | Ipswich Town |
| 2024-12-16 | €20M | Ipswich Town |
| 2025-05-30 | €18M | Ipswich Town |
| 2025-12-03 | €16M | Ipswich Town |
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
- +0.336
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 46% of the 555 Premier League players.
See them in the Explorer →Defenders, all leagues2,065 players · median €2M
Valued above 88% of the 2,065 defenders.
See them in the Explorer →Where Greaves appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- AdarabioyoCBChelsea FC · Premier League€16M
- JaneltDMBrentford FC · Premier League€16M
- BuendíaLWAston Villa · Premier League€16M
- MukieleRBSunderland AFC · Premier League€16M
- SánchezCBGalatasaray · defenders€16M
- O'SheaCBIpswich Town · defenders€16M
- DodôRBACF Fiorentina · defenders€16M
- HartmanLBBurnley FC · defenders€16M
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).