D. Köstl

D. Köstl is a 28-year-old central defender at Ružomberok, rated 21.1 overall by Field Insider's model, ranking 114th of 171 on scout potential in the Super Liga. An experienced operator, he has been a fringe squad member this season (29.7% of available minutes). His defensive output reads 2.11 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Köstl.

Judged on this season alone, Köstl graded 7 — a workmanlike campaign that ranks 27th of 30 of the 30 centre-backs in the Super Liga, on 2 clean sheets and 2.105 defensive actions per 90.

We hold a single season for Köstl, so there's no year-on-year comparison to draw yet — the read above is this campaign only.

On long-term talent our Rating reads 21, 18th of 30 of the 30 centre-backs in the Super Liga. At 28 Köstl is in his prime years, and a market index of 1.5 reflects that trajectory.

Current potential18th of 30 centre-backs · Super Liga · 22 apps Current season27th of 30 centre-backs · Super Liga · 22 apps27th-best centre-back in the Super Liga114th in the Super Liga · potential18th-highest potential centre-back in the Super Liga

21.1

Ratingi

18th of 30 centre-backs

6.8

Seasoni

below regular-starter level

29.7%

Minutes

limited game time

2.11

Def. actions / 90

moderate defensive volume

Output in context · Ružomberok finished 3rd of 6 · a mid-table side

2.11

Def. / 90

Tackles

Interceptions

Clean sheets

2.11 tackles, blocks & interceptions per 90 — moderate defensive volume, with 2 clean sheets across 22 appearances. Going forward he chipped in 1 goal and 0 assists — a useful bonus from the back.

Watch points

Game time. Only 29.7% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

With a Rating of 21.1, Köstl carries the 18th-highest potential of the centre-backs in the Super Liga of 30 — though on just 22 appearances this season, so the standing rests on a small sample. Defensively he reads as moderate defensive volume (2.11 tackles, blocks & interceptions per 90). Experienced and reliable, but the value curve is easing (1.2× now → 0.9× projected in three years).

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %29.7%

Available fixtures32 of 32

Goals / 900.105

Assists / 900

Goal contribution / 900.105

Defensive actions / 902.105

Player flow

Goal involvements1

Shot conversion %50

Shot accuracy %28.6

Pass accuracy %78

Dribble success %75

Cards / 900.526

Foul involvement / 901.053

Value & potential by age

Market valueRating

Solid = now · dashed = projected

The gold line is market value — an index (not €) blending rating, age and league. It climbs through the early 20s, peaks around ages 23–27 (~2), then tapers with age. At 28, Köstl sits on 1.5, past its peak and easing. The blue line is Köstl's projected Rating — 21.1 today — recomputed at each age, so it follows the same rise-and-fall as a career matures and declines. Solid = up to today; dashed = projected.