Jens Castrop
Midfield, South Korea
Club football at Borussia Mönchengladbach.
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
Midfield
South Korea
club
Borussia Mönchengladbach
football-data.org
club tier
1641
ClubElo strength
our board
#739
of 1424 rated players
folded so far
1738′
29 appearances
transfer market value (EUR millions), as a rank among peers
10.00
94th percentile of peers
Sourced
- squad
- South Korea · Midfieldfootball-data.org · 2026-06-29
- club
- Borussia Mönchengladbachfootball-data.org · 2026-06-29
Sourced context, nothing more. It never touches a call.
Our rating · the working
the board →1726 ±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
1723 full roster Elo (−3 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 ~1728 ±45 a projection, not a measurement: room left on the midfield 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 South Korea's strengththe fair club-over-national anchor, every player's starting point
- 1702
- age curve at 22 (midfields' curve)measured from the open archive by our own study (defenders: the published literature's shape), never fitted to our calls
- -11
- transfer market value, a sourced market-consensus quality prior (the stronger reading for him here)his percentile among minutes-qualified peers, from club seasons
- +36
- quality rating · club, age + measured output
- 1726
- form: national-team results, 29 appearances1738 minutes, weighted by margin, surprise and his match stats, but shared across the XI
- -3
- full roster Elo · with results
- 1723
Where the +36 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
- 10.00 transfer market value (EUR millions), as a rank among peers
- his rank
- 94th 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(94.0th) = 46 × 1.55 × 0.5 (position weight) = +36
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
#739 of 1424 rated players on our board.
What he’d cost · our estimate
€6.5m–€25m ≈ €13m
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 1641the level he plays at, the strongest signal of what a club pays
- ×1.60
- ageage 22, the resale premium a club pays for the years to come
- ×1.15
- midfielder fee factorstrikers set the market's top; midfield runs close; defence and goal at the record books' discounts
- ×0.90
- 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
- ≈ €13m
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: €0.5m (2023-07). Our estimate today: ≈ €13m. The gap is evidence, many of them, together, recalibrate our model; no single one rewrites him.
our read: undervalued , we rate him 2747% above his last market price (a gem signal, context only)
- 2025-06-301. FC Nürnberg → Borussia Mönchengladbachundisclosed
- 2025-06-011. FC Nürnberg → Borussia Mönchengladbachundisclosed
- 2023-07-011.FC Köln → 1. FC Nürnberg€0.5m
- 2022-01-071.FC Köln → 1. FC Nürnbergloan
Reported moves, dated and attributed (api-football.com), news facts, not a valuation site’s estimates. It never touches a call.
In our coverage · South Korea’s record
- at South Africa1–0Missed it
- at Mexico1–0Called it
- v Czech Republic2–1Called it
The newsroom’s calls on South Korea. Team-level, never dressed up as a player stat.
Squad · sourced
- Bum-keun Song
- Cho Wi-Je
- Dong-gyeong Lee
- Gi-hyuk Lee
- Gue-Sung Cho
- Han-bum Lee
- Heung-min Son
- Hwang Heechan
- Hyeon-woo Jo
- Hyun-Gyu Oh
- Hyun-jun Yang
- In-beom Hwang
- Jae-sung Lee
- Ji-sung Eom
- Jin-Gyu Kim
- Jin-seob Park
- Joon-ho Bae
- Kang-in Lee
- Min-Jae Kim
- Moon-hwan Kim
- Seung-Gyu Kim
- Seung-Ho Paik
- Tae-hyeon Kim
- Tae-seok Lee
- Young-woo Seol