Giannis
Papanikolaou
DMGreece · Caykur Rizespor
Player dossierSüper Lig
GiannisPapanikolaou
DMDefensive MidfieldMidfield
- Club
- Caykur Rizespor
- League
- Süper Lig
- Nationality
- Greece
- Age
- 27
- Height
- 182 cm
- Foot
- Left
- Valued
- 21 May 2026
Süper LigReading the valuation
The market values Papanikolaou at €1.2M. Model A, which never saw Papanikolaou during training, estimates €2M: the market value is 40% below that estimate.
That is a factor of ×1.67. 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 €1.7M, 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
- 52
- Minutes
- 3,430
- Goals
- 1
- Assists
- 1
- Started
- 42/52
- Min / app
- 66
- Cards
- 13Y 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 Papanikolaou…
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 €1.2M
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)
Starts
Share of appearances started rather than entered from the bench.
81% this player69% midfielder median71st 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 2016
- Peak
- €2.5M
- Oct 2023
- Model target
- €1.2M
- May 2026
- Valuations
- 29
- 3 club changes
May 2026: €1.2M, Caykur Rizespor. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2016-10-01 | €50k | Platanias Chania |
| 2016-12-21 | €50k | Platanias Chania |
| 2017-05-11 | €50k | Platanias Chania |
| 2017-12-18 | €75k | Platanias Chania |
| 2018-05-22 | €150k | Platanias Chania |
| 2019-06-11 | €350k | Platanias Chania |
| 2019-12-18 | €400k | Panionios FC |
| 2020-04-08 | €350k | Panionios FC |
| 2020-08-04 | €350k | Panionios FC |
| 2021-01-19 | €350k | Raków Częstochowa |
| 2021-05-21 | €350k | Raków Częstochowa |
| 2021-10-15 | €550k | Raków Częstochowa |
| 2021-12-31 | €550k | Raków Częstochowa |
| 2022-04-07 | €700k | Raków Częstochowa |
| 2022-06-14 | €1.2M | Raków Częstochowa |
| 2022-09-29 | €1.5M | Raków Częstochowa |
| 2022-11-16 | €1.8M | Raków Częstochowa |
| 2023-06-09 | €2M | Raków Częstochowa |
| 2023-10-06 | €2.5M | Raków Częstochowa |
| 2023-12-29 | €2.5M | Raków Częstochowa |
| 2024-03-28 | €2M | Raków Częstochowa |
| 2024-06-07 | €2M | Raków Częstochowa |
| 2024-10-04 | €1.4M | Caykur Rizespor |
| 2024-12-23 | €1.5M | Caykur Rizespor |
| 2025-03-20 | €1.5M | Caykur Rizespor |
| 2025-06-18 | €1.4M | Caykur Rizespor |
| 2025-10-01 | €1.5M | Caykur Rizespor |
| 2025-12-17 | €1.5M | Caykur Rizespor |
| 2026-05-21 | €1.2M | Caykur Rizespor |
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
- −0.511
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 →Süper Lig428 players · median €1.2M
Valued above 45% of the 428 Süper Lig players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 35% of the 1,687 midfielders.
See them in the Explorer →Where Papanikolaou appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- YokuşluDMTrabzonspor · Süper Lig€1.2M
- ThiamCFEyüpspor · Süper Lig€1.2M
- StormLWAntalyaspor · Süper Lig€1.2M
- HajradinovicAMKasimpasa · Süper Lig€1.2M
- WitselDMGirona FC · midfielders€1.2M
- HendersonDMBrentford FC · midfielders€1.2M
- CabellaAMFC Nantes · midfielders€1.2M
- OzdoevDMPAOK Thessaloniki · midfielders€1.2M
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).