Domestic-league season · FC Porto.
Earlier this season at Arsenal — Emirates Cup: 5 apps, 0g 2a, 267 min
The headline Season rating covers his time at FC Porto; availability counts only fixtures while in this squad.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Primeira Liga | 26 | 0 | 1 | 2217 | 7.26 |
 UEFA Europa League | 8 | 0 | 0 | 617 | 7.25 |
 Emirates Cupat Arsenal | 5 | 0 | 2 | 267 | 7.27 |
 Friendlies Clubs | 5 | 0 | 2 | 267 | 7.27 |
 Taça de Portugal | 5 | 0 | 0 | 249 | 7.07 |
Following his move to FC Porto, Kiwior's current-season form is up 294% on last season (Season 18→71), while his Rating eased 78→59. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | FC Porto · 1st | 26 | 0 | 1 | 7.26 | 59 | 71 |
| 2024/25 | Arsenal · 2nd | 37 | 1 | 0 | 6.89 | 78 | 18 |
| 2023/24 | Arsenal · 2nd | 38 | 1 | 3 | 6.91 | 82 | 22 |
| 2022/23 | Spezia · 17th | 18 | 0 | 0 | 6.79 | 70 | 15 |
| 2021/22 | Spezia · 16th | 22 | 0 | 0 | 6.81 | 75 | 30 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
| Competition | Apps | G |
|---|---|---|
| Friendlies | 2 | 0 |
Caps & goals this season.
J. Kiwior is a 26-year-old central defender at FC Porto, rated 58.8 overall by Field Insider's model, ranking 105th of 317 in the Primeira Liga. In his prime years, he has been a regular starter this season (72.5% of available minutes). His defensive output reads 4.06 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Kiwior.
Judged on this season alone, Kiwior graded 71 — a standout campaign that ranks top 4% of the 56 centre-backs in the Primeira Liga, on 15 clean sheets and 4.06 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 18 → 71). Across the 5 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 59, top 29% of the 56 centre-backs in the Primeira Liga. At 26 Kiwior is in his prime years, and a market index of 37.4 reflects that trajectory.
A career still climbing — Kiwior is at his peak right now, and the curve hasn't flattened.
4.06 tackles, blocks & interceptions per 90 — solid defensive volume, with 15 clean sheets across 26 appearances. Behind a title-challenging side (1st of 18) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume. Going forward he chipped in 0 goals and 1 assist — a useful bonus from the back.
With a Rating of 58.8, Kiwior carries the 16th-highest potential of the centre-backs in the Primeira Liga (top 29%). Defensively he reads as solid defensive volume (4.06 tackles, blocks & interceptions per 90). In the prime window — at or near peak market value, so the next two seasons are the ones to cash in or build around.
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 (~37), then tapers with age. At 26, Kiwior sits on 37.4, at or near its peak. The blue line is Kiwior's projected Rating — 58.8 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.
€1.8M total transfer fees · 2 moves
No transfer news found for this player.
