Kacper Koscierski

Following his move to Alemannia Aachen, Koscierski's current-season form is down 100% on last season (Season 3→0), while his Rating eased 57→37. His peak season for form remains 2025/26 (Season 3).

Domestic career

Season	Club	Apps	A	Match	RTG	Season
2026/27	Alemannia AachenLoan · 8th	7	0	6.2	59	0
2025/26	VfL Bochum · 9th	11	1	6.63	57	3
2024/25	VfL Bochum · 18th	1	0	—	62	0

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 1 youth-team spell in the full career.

Scout report

Squad depthCentral defender

K. Koscierski is a 19-year-old central defender at Alemannia Aachen, rated 37 overall by Field Insider's model. A young player, he has been a fringe squad member this season (4.5% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Koscierski.

On the season, Koscierski graded 0 for current form (age-blind), on 0 clean sheets and 0 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 3 → 0). Over the 3 seasons on record his form has held fairly steady, peaking in 2025/26.

On long-term talent our Rating reads 37. At 19 Koscierski is still climbing toward his ceiling, and a market index of 5.5 reflects that trajectory.

Ratingi

developing / rotation level

Seasoni

below regular-starter level

4.5%

Minutes

limited game time

Def. actions / 90

light defensive volume

Output in context · Alemannia Aachen finished 8th of 20 · a mid-table side

Apps

Def. / 90

—

Tackles

—

Interceptions

Clean sheets

0 tackles, blocks & interceptions per 90 — light defensive volume across 7 appearances.

Watch points

Game time. Only 4.5% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 37 overall — developing / rotation level. Defensively he reads as light defensive volume (0 tackles, blocks & interceptions per 90). At 19 the trajectory points up — potential sits near its ceiling (99/100) and market value should climb as minutes and output follow.

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

Per 90 & availability

Minutes played %4.5%

Available fixtures10 of 10

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900

Player flow

Goal involvements0

Pass accuracy %86

Cards / 901.169

Season-by-season progression

Rating (potential)Season (form)

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 (~7), then tapers with age. At 19, Koscierski sits on 5.5, still climbing toward its peak. The blue line is Koscierski's projected Rating — 37 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.

Transfer history

Alemannia Aachen(on loan)Aug 2026 – now

VfL Bochumuntil Aug 2026

About K. Koscierski

Kacper Koscierski is a 19-year-old centre-back who plays for Alemannia Aachen, born on June 23, 2007 in Aachen, standing 179 cm tall. He is from Germany. Alemannia Aachen currently sit 8th of 20 in the 3. Liga.

This season

In the current season, K. Koscierski has made 7 appearances with 0 goals and 0 assists across 77 minutes, with 1 yellow card.

K. Koscierski's next match is on November 1, 2026, when Alemannia Aachen face Preußen Münster at home in the 3. Liga.

Field Insider's view

Field Insider currently rates K. Koscierski at 37 with a Season form score of 0. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 3 recorded seasons, K. Koscierski has totalled 36 club appearances with 5 goals and 1 assist for 3 different clubs. His busiest campaign came in 2024/25, with 17 appearances for Bochum U19.

K. Koscierski's career has also included time at VfL Bochum.

Transfer news

No transfer news found for this player.