Viljami
Sinisalo
GKFinland · Celtic FC
Player dossierPremiership
ViljamiSinisalo
GKGoalkeeperGoalkeeper
- Club
- Celtic FC
- League
- Premiership
- Nationality
- Finland
- Age
- 24
- Height
- 190 cm
- Foot
- Right
- Valued
- 20 May 2026
PremiershipReading the valuation
The market values Sinisalo at €1M. Model A, which never saw Sinisalo during training, estimates €2M: the market value is 50% below that estimate.
That is a factor of ×2.00. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.
Without league and club, Model B estimates €1.6M, 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
- 17
- Minutes
- 1,620
- Started
- 17/17
- Min / app
- 95
- Cards
- 0Y 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 Sinisalo…
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)
European club minutes
Share of minutes played in UEFA club competitions.
6% this player0% goalkeeper median68th 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
- Jan 2021
- Peak
- €1M
- Jun 2025
- Model target
- €1M
- May 2026
- Valuations
- 10
- 4 club changes
May 2026: €1M, Celtic FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2021-01-18 | €200k | Ayr United FC |
| 2022-07-29 | €200k | Burton Albion |
| 2023-03-16 | €400k | Aston Villa |
| 2023-06-20 | €500k | Aston Villa |
| 2023-12-27 | €600k | Exeter City |
| 2024-10-02 | €800k | Celtic FC |
| 2024-12-03 | €800k | Celtic FC |
| 2025-06-17 | €1M | Celtic FC |
| 2025-12-10 | €1M | Celtic FC |
| 2026-05-20 | €1M | Celtic 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
- −0.691
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 →Premiership311 players · median €400k
Valued above 72% of the 311 Premiership 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 Sinisalo appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- Oxlade-ChamberlainCMCeltic FC · Premiership€1M
- GeigerCMAberdeen FC · Premiership€1M
- John-JulesCFKilmarnock FC · Premiership€1M
- BushiriCBHibernian FC · Premiership€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).