Domestic-league season · Malmo FF.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Allsvenskan | 14 | 1 | 1 | 971 | 7.02 |
 UEFA Europa League | 3 | 0 | 0 | 191 | 6.5 |
 UEFA Champions League | 2 | 0 | 0 | 0 | — |
Following his move to Malmo FF, Karlsson's current-season form is up 70% on last season (Season 10→17), while his Rating held around 31. His peak season for form remains 2022/23 (Season 37).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Malmo FF · 6th | 14 | 1 | 1 | 7.02 | 31 | 17 |
| 2024/25 | Kalmar FF · 15th | 17 | 0 | 1 | 6.75 | 32 | 10 |
| 2023/24 | Malmo FF · 1st | 26 | 0 | 1 | 6.71 | 38 | 37 |
| 2022/23 | Kalmar FF · 4th | 26 | 1 | 2 | 7.11 | 38 | 37 |
| 2021/22 | Sirius · 11th | 22 | 1 | 1 | 6.48 | 34 | 7 |
| 2020/21 | Sirius · 10th | 20 | 0 | 0 | — | 33 | 2 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
J. Karlsson is a 25-year-old full-back at Malmo FF, rated 31.1 overall by Field Insider's model, ranking 120th of 244 in the Allsvenskan. In his prime years, he has been a rotation option this season (36% of available minutes). His defensive output reads 2.97 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Karlsson.
Judged on this season alone, Karlsson graded 17 — a workmanlike campaign that ranks 27th of 42 of the 42 full-backs in the Allsvenskan, on 4 clean sheets and 2.966 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 10 → 17). Over the 6 seasons on record his form has trended upward, peaking in 2022/23.
On long-term talent our Rating reads 31, 19th of 42 of the 42 full-backs in the Allsvenskan. At 25 Karlsson is in his prime years, and a market index of 11.2 reflects that trajectory.
Past his 2022/23 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
2.97 tackles, blocks & interceptions per 90 — moderate defensive volume, with 4 clean sheets across 14 appearances. Going forward he chipped in 1 goal and 1 assist — a useful bonus from the back.
With a Rating of 31.1, Karlsson carries the 19th-highest potential of the full-backs in the Allsvenskan of 42 — though on just 14 appearances this season, so the standing rests on a small sample. Defensively he reads as moderate defensive volume (2.97 tackles, blocks & interceptions per 90). 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.
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 (~11), then tapers with age. At 25, Karlsson sits on 11.2, at or near its peak. The blue line is Karlsson's projected Rating — 31.1 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.
No transfer news found for this player.
