Ignacio de
Arruabarrena
GKUruguay · FC Arouca
Player dossierLiga Portugal
Ignacio deArruabarrena
GKGoalkeeperGoalkeeper
- Club
- FC Arouca
- League
- Liga Portugal
- Nationality
- Uruguay
- Age
- 29
- Height
- 185 cm
- Foot
- Right
- Valued
- 28 May 2026
Liga PortugalReading the valuation
The market values Arruabarrena at €1M. Model A, which never saw Arruabarrena during training, estimates €669k: the market value is 50% above that estimate.
That is a factor of ×1.50. 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 €738k, 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
- 16
- Minutes
- 1,440
- Started
- 16/16
- Min / app
- 90
- 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 Arruabarrena…
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 €1M
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 485 goalkeepers
Dashed ring: the goalkeeper median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
100% this player100% goalkeeper median62nd 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
- €75k
- Aug 2015
- Peak
- €2M
- Jun 2024
- Model target
- €1M
- May 2026
- Valuations
- 21
- 4 club changes
May 2026: €1M, FC Arouca. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2015-08-14 | €75k | Montevideo Wanderers |
| 2016-02-25 | €150k | Montevideo Wanderers |
| 2016-09-09 | €100k | Montevideo Wanderers |
| 2017-02-22 | €100k | Montevideo Wanderers |
| 2018-02-05 | €100k | Montevideo Wanderers |
| 2019-03-03 | €350k | Montevideo Wanderers |
| 2020-04-08 | €300k | Montevideo Wanderers |
| 2021-01-02 | €400k | Montevideo Wanderers |
| 2021-04-10 | €500k | Montevideo Wanderers |
| 2021-09-10 | €500k | Montevideo Wanderers |
| 2022-01-01 | €500k | Montevideo Wanderers |
| 2022-06-02 | €700k | Montevideo Wanderers |
| 2022-11-01 | €700k | FC Arouca |
| 2023-06-16 | €1.5M | FC Arouca |
| 2023-12-27 | €1.5M | FC Arouca |
| 2024-06-06 | €2M | FC Arouca |
| 2024-12-13 | €1.5M | Al-Wehda FC |
| 2025-06-16 | €1.2M | Barcelona SC Guayaquil |
| 2025-09-29 | €1M | Barcelona SC Guayaquil |
| 2025-12-22 | €1M | Barcelona SC Guayaquil |
| 2026-05-28 | €1M | FC Arouca |
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
- +0.402
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 42% of the 423 Liga Portugal players.
See them in the Explorer →Goalkeepers, all leagues485 players · median €1M
Valued above 48% of the 485 goalkeepers.
See them in the Explorer →Where Arruabarrena appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- OtamendiCBSL Benfica · Liga Portugal€1M
- SoaresLBFC Famalicão · Liga Portugal€1M
- ZlobinGKFC Famalicão · Liga Portugal€1M
- FerroCBGD Estoril Praia · Liga Portugal€1M
- AkinfeevGKCSKA Moscow · goalkeepers€1M
- MignoletGKClub Brugge KV · goalkeepers€1M
- UnnerstallGKFC Twente Enschede · goalkeepers€1M
- GulácsiGKRB Leipzig · goalkeepers€1M
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).