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Ousmane Diomande

Ivory Coast · the desk

Defence, Ivory Coast

Club football at Sporting Clube de Portugal.

Sourced facts, dated and on the record. Squad membership, and his club when a source names one. Nothing invented; we don’t make players up.

At a glance

  • age

    22

    sourced with the squad

  • position

    Defence

    Ivory Coast

  • club

    Sporting Clube de Portugal

    football-data.org

  • club tier

    1848

    ClubElo strength

  • our board

    #266

    of 1424 rated players

  • folded so far

    1146′

    18 appearances

  • transfer market value (EUR millions), as a rank among peers

    42.00

    99th percentile of peers

Sourced

squad
Ivory Coast · Defencefootball-data.org · 2026-06-29
club
Sporting Clube de Portugalfootball-data.org · 2026-06-29

Sourced context, nothing more. It never touches a call.

Our rating · the working

the board

1864 ±45

his quality rating: club, age and measured output. The board orders by this plus his World Cup form, less a discount for how much we can measure him.

How the number is builtopenclose

1869 full roster Elo (+5 from national-team results)

the ± is how settled the number is, more minutes, tighter band

Tier 2, lineups + results, how rich the evidence is, not just how much

potential ~1877 ±46 a projection, not a measurement: room left on the defence age curve

Where he starts (his team’s strength, we refuse to invent what we haven’t measured) plus two fixed nudges make the quality rating above; the last line is what national-team results have added since, taking it to his full roster Elo.

starts at Ivory Coast's strengththe fair club-over-national anchor, every player's starting point
1834
age curve at 22 (defences' curve)measured from the open archive by our own study (defenders: the published literature's shape), never fitted to our calls
-15
transfer market value, a sourced market-consensus quality prior (the stronger reading for him here)his percentile among minutes-qualified peers, from club seasons
+45
quality rating · club, age + measured output
1864
form: national-team results, 18 appearances1146 minutes, weighted by margin, surprise and his match stats, but shared across the XI
+5
full roster Elo · with results
1869

Where the +45 skill term comes from

Not a reputation, a measurement. We score every shot in the data ourselves and rank him among minutes-qualified peers; a fixed arithmetic turns that rank into points.

measured
42.00 transfer market value (EUR millions), as a rank among peers
his rank
99th percentile of qualified peers
scored from
the CC0 Transfermarkt community mirror; a market-consensus quality prior, taken at a capped weight where it reads a player higher than our (fixed, partial) shot/event data can
the arithmetic
46 pts/σ × z(99.3th) = 46 × 2.44 × 0.4 (position weight) = +45

A forward-only shadow signal, as of 2026-06-25. The skill term comes from our own xG models over the open archive; the rest is earned, recorded per appearance, auditable, never back-filled. It never moves a live call.

The notebook

The lines a beat writer keeps, except every one of ours is read off the ledger above, auditable to the night. Nothing invented.

  • standing

    #266 of 1424 rated players on our board.

What he’d cost · our estimate

€8.8m€34m €17m

Not a figure from any valuation site; we don’t republish those. Our own model: the level he plays at, what we’ve measured of him, his age and his role. A band, not a point: we can’t see contract length or release clauses, the two biggest real drivers, so we say so.

The workingopenclose
reference feea mid-tier-club, peak-age forward of average measured skill
€8m
club tier 1848the level he plays at, the strongest signal of what a club pays
×3.46
ageage 22, the resale premium a club pays for the years to come
×1.15
defender fee factorstrikers set the market's top; midfield runs close; defence and goal at the record books' discounts
×0.58
individual skillour xG model has no confident read on him, priced on club, age and role only, so the band is wide
×1.00
our estimate
€17m

fee-model v3 priors (panel-anchored, 2026-06), calibrated against our reported fees. The band is roughly two-in-three likely; contract length and release clauses are data we don’t hold. Context only, it never touches a call.

The fee record · sourced

The market’s last public word: €7.5m (2023-01). Our estimate today: ≈ €17m. The gap is evidence, many of them, together, recalibrate our model; no single one rewrites him.

our read: undervalued , we rate him 132% above his last market price (a gem signal, context only)

  • 2023-01-31FC Midtjylland Sporting CP€7.5m
  • 2023-01-30Mafra FC Midtjyllandundisclosed
  • 2022-08-04FC Midtjylland Mafraloan

Reported moves, dated and attributed (api-football.com), news facts, not a valuation site’s estimates. It never touches a call.

In our coverage · Ivory Coast’s record

  • v NorwaySealed
  • at Curaçao0–2Called it
  • at Germany2–1Called it
  • v Ecuador1–0Missed it

The newsroom’s calls on Ivory Coast. Team-level, never dressed up as a player stat.

Squad · sourced