Sebastian
Nanasi
LWSweden · RC Strasbourg Alsace
Player dossierLigue 1
SebastianNanasi
LWLeft WingerAttack
- Club
- RC Strasbourg Alsace
- League
- Ligue 1
- Nationality
- Sweden
- Age
- 24
- Height
- 178 cm
- Foot
- Right
- Valued
- 1 Jun 2026
Ligue 1Reading the valuation
The market values Nanasi at €15M. Model A, which never saw Nanasi during training, estimates €18.2M: the market value is 17% below that estimate.
That is a factor of ×1.21. 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 €13.2M, 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
- 55
- Minutes
- 3,564
- Goals
- 16
- Assists
- 7
- Started
- 42/55
- Min / app
- 65
- Cards
- 2Y 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 Nanasi…
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 €15M
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 1,583 attackers
Dashed ring: the attacker median (50th percentile)
Starts
Share of appearances started rather than entered from the bench.
76% this player59% attacker median78th 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
- €100k
- Aug 2020
- Peak
- €18M
- Jun 2025
- Model target
- €15M
- Jun 2026
- Valuations
- 17
- 2 club changes
Jun 2026: €15M, RC Strasbourg Alsace. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2020-08-05 | €100k | Varbergs BoIS |
| 2020-12-10 | €100k | Malmö FF |
| 2021-06-09 | €100k | Malmö FF |
| 2021-09-17 | €300k | Malmö FF |
| 2021-12-17 | €500k | Malmö FF |
| 2022-06-24 | €800k | Malmö FF |
| 2022-12-14 | €1.8M | Malmö FF |
| 2023-06-27 | €3.5M | Malmö FF |
| 2023-09-13 | €4.5M | Malmö FF |
| 2023-12-08 | €5M | Malmö FF |
| 2024-06-13 | €8M | Malmö FF |
| 2024-10-07 | €12M | RC Strasbourg Alsace |
| 2024-12-10 | €15M | RC Strasbourg Alsace |
| 2025-06-03 | €18M | RC Strasbourg Alsace |
| 2025-12-15 | €15M | RC Strasbourg Alsace |
| 2026-03-27 | €12M | RC Strasbourg Alsace |
| 2026-06-01 | €15M | RC Strasbourg Alsace |
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
- −0.191
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 →Ligue 1423 players · median €5M
Valued above 76% of the 423 Ligue 1 players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 81% of the 1,583 attackers.
See them in the Explorer →Where Nanasi appears
- TerminalLigue 1 in the Player Explorer
- TerminalLigue 1 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
- HøjbjergDMOlympique Marseille · Ligue 1€15M
- EmboloCFStade Rennais FC · Ligue 1€15M
- NiakhatéCBOlympique Lyon · Ligue 1€15M
- AguerdCBOlympique Marseille · Ligue 1€15M
- TsygankovRWGirona FC · attackers€15M
- LukébakioRWSL Benfica · attackers€15M
- PinamontiCFUS Sassuolo · attackers€15M
- TellaRWBayer 04 Leverkusen · attackers€15M
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).