Sergi
Altimira
CMSpain · Real Betis Balompié
Image: FootyLogos
Player dossierLaLiga
SergiAltimira
CMCentral MidfieldMidfield
- Club
- Real Betis Balompié
- League
- LaLiga
- Nationality
- Spain
- Age
- 24
- Height
- 188 cm
- Foot
- Right
- Valued
- 5 Jun 2026
Reading the valuation
The market values Altimira at €20M. Model A, which never saw Altimira during training, estimates €13.5M: the market value is 48% above that estimate.
That is a factor of ×1.48. 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 €18.3M, closer to the market here, although it is usually further off (typical miss ×2.07).
A gap describes the model's arithmetic for this player's inputs, not what the player is worth.
- Apps
- 78
- Minutes
- 4,503
- Goals
- 3
- Assists
- 4
- Started
- 51/78
- Min / app
- 58
- Cards
- 9Y 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 Altimira…
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)
Minutes, two years
Total club minutes in the two-year window: how much the player was used.
4,503 this player2,607 midfielder median81st 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
- €50k
- Oct 2021
- Peak
- €20M
- Oct 2025
- Model target
- €20M
- Jun 2026
- Valuations
- 16
- 1 club change
Jun 2026: €20M, Real Betis Balompié. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-10-13 | €50k | CE Sabadell FC |
| 2021-12-30 | €50k | CE Sabadell FC |
| 2022-06-29 | €50k | CE Sabadell FC |
| 2022-12-29 | €150k | CE Sabadell FC |
| 2023-06-30 | €300k | CE Sabadell FC |
| 2023-10-13 | €2M | Real Betis Balompié |
| 2023-12-22 | €2M | Real Betis Balompié |
| 2024-03-21 | €3M | Real Betis Balompié |
| 2024-06-07 | €2.5M | Real Betis Balompié |
| 2024-10-11 | €3.5M | Real Betis Balompié |
| 2024-12-27 | €7.5M | Real Betis Balompié |
| 2025-03-21 | €10M | Real Betis Balompié |
| 2025-06-09 | €15M | Real Betis Balompié |
| 2025-10-02 | €20M | Real Betis Balompié |
| 2025-12-12 | €20M | Real Betis Balompié |
| 2026-06-05 | €20M | Real Betis Balompié |
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
- +0.391
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 →Midfielders, all leagues1,687 players · median €2M
Valued above 88% of the 1,687 midfielders.
See them in the Explorer →Where Altimira appears
- TerminalLaLiga in the Player Explorer
- TerminalLaLiga on the League Landscape
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- LlorenteRBAtlético de Madrid · LaLiga€20M
- NormandCBAtlético de Madrid · LaLiga€20M
- MilitãoCBReal Madrid · LaLiga€20M
- KuboRWReal Sociedad · LaLiga€20M
- GarcíaCMBayer 04 Leverkusen · midfielders€20M
- MaddisonAMTottenham Hotspur · midfielders€20M
- SchoutenDMPSV Eindhoven · midfielders€20M
- BentancurDMTottenham Hotspur · 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).