J. Grobelny

Following his move to Arka Gdynia, Grobelny's current-season form is down 93% on last season (Season 14→1), while his Rating eased 37→30. His peak season for form remains 2023/24 (Season 14).

Domestic career

Season	Club	Apps	CS	CS%	Match	RTG	Season
2025/26	Arka Gdynia · 17th	7	1	14%	6.83	30	1
2024/25	Warta Poznań	13	0	0%	—	—	—
2023/24	Warta Poznań · 16th	32	6	19%	6.98	37	14
2022/23	Warta Poznań · 9th	32	2	6%	6.3	34	8
2021/22	Warta Poznań · 11th	9	3	33%	6.52	35	9

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

Scout report

Squad depthGoalkeeper

J. Grobelny is a 25-year-old goalkeeper at Arka Gdynia, rated 29.5 overall by Field Insider's model, ranking 169th of 332 on scout potential in the Ekstraklasa. In his prime years, he has been a fringe squad member this season (20.7% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Grobelny.

Judged on this season alone, Grobelny graded 1 — a workmanlike campaign that ranks 24th of 26 of the 26 goalkeepers in the Ekstraklasa, on 1 clean sheet across 7 appearances.

Year-on-year, that's a drop on last season (Season 14 → 1). Over the 4 seasons on record his form has drifted down, peaking in 2023/24.

On long-term talent our Rating reads 30, 13th of 26 of the 26 goalkeepers in the Ekstraklasa. At 25 Grobelny is in his prime years, and a market index of 4.2 reflects that trajectory.

From the career report

Read the full career report →

Grobelny is operating at his career peak — the 2023/24 level is the level.

Peak: 2023/24Holding levelRemarkably consistent

Current potential13th of 26 goalkeepers · Ekstraklasa · 7 apps Current season24th of 26 goalkeepers · Ekstraklasa · 7 apps24th-best goalkeeper in the Ekstraklasa169th in the Ekstraklasa · potential13th-highest potential goalkeeper in the Ekstraklasa

29.5

Ratingi

13th of 26 goalkeepers

1.4

Seasoni

below regular-starter level

20.7%

Minutes

limited game time

0.28

Def. actions / 90

light defensive volume

Output in context · Arka Gdynia finished 17th of 18 · a relegation-threatened side

Apps

Clean sheets

14%

CS rate

20.7%

Minutes

1 clean sheet in 7 appearances (14% of games). Keeping that many behind a relegation-threatened side (17th of 18) — a side that concedes more — points to a busy, productive season between the posts.

Watch points

Game time. Only 20.7% 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 29.5, Grobelny carries the 13th-highest potential of the goalkeepers in the Ekstraklasa of 26 — though on just 7 appearances this season, so the standing rests on a small sample. A limited game time keeper carrying the gloves this season. Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead.

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

Per 90 & availability

Minutes played %20.7%

Available fixtures34 of 34

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 900.284

Player flow

Goal involvements0

Pass accuracy %52

Cards / 900.142

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 (~4), then tapers with age. At 25, Grobelny sits on 4.2, at or near its peak. The blue line is Grobelny's projected Rating — 29.5 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.