Domestic-league season · Sakaryaspor.
Following his move to Sakaryaspor, Szumski's current-season form is up 0% on last season (Season 0→7), while his Rating climbed 15→18. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Sakaryaspor · 18th | 35 | 0 | 0 | 7.1 | 18 | 7 |
| 2023/24 | Samsunspor · 13th | 34 | 0 | 0 | 6.6 | 15 | 0 |
| 2020/21 | Erzurumspor FK · 18th | 21 | 0 | 0 | 6.72 | 31 | 4 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
J. Szumski is a 34-year-old goalkeeper at Sakaryaspor, rated 18.4 overall by Field Insider's model, ranking 602nd of 720 in the 1. Lig. A seasoned veteran, he has been an ever-present this season (94.1% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Szumski.
Judged on this season alone, Szumski graded 7 — a workmanlike campaign that ranks 47th of 61 of the 61 goalkeepers in the 1. Lig, on 5 clean sheets across 35 appearances.
Year-on-year, that's a clear step up on last season (Season 0 → 7). Across the 3 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 18, 47th of 61 of the 61 goalkeepers in the 1. Lig. At 34 Szumski is into the veteran stage, where the age curve weighs on the projection, and a market index of 3.5 reflects that trajectory.
Szumski is operating at his career peak — the 2025/26 level is the level.
5 clean sheets in 35 appearances (14% of games). Keeping that many behind a relegation-threatened side (18th of 20) — a side that concedes more — points to a busy, productive season between the posts.
With a Rating of 18.4, Szumski carries the 47th-highest potential of the goalkeepers in the 1. Lig of 61, and he is posting that for a relegation-threatened side (Sakaryaspor finished 18th of 20) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. A near ever-present keeper carrying the gloves this season. Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.6× and falling).
Generated from Field Insider's rating model · AI-written analysis to follow.
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 (~12), then tapers with age. At 34, Szumski sits on 3.5, past its peak and easing. The blue line is Szumski's projected Rating — 18.4 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.
No transfer news found for this player.
