Domestic-league season · Hammarby FF.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Allsvenskan | 28 | 3 | 1 | 2486 | 7.28 |
Karlsson's current-season form is up 70% on last season (Season 23→39), while his Rating climbed 39→42. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Hammarby FF · 2nd | 28 | 3 | 1 | 7.28 | 42 | 39 |
| 2024/25 | Hammarby FF · 2nd | 25 | 0 | 3 | 7.05 | 39 | 23 |
| 2023/24 | Hammarby FF · 7th | 22 | 1 | 2 | 6.84 | 37 | 24 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
M. Karlsson is a 22-year-old defensive midfielder at Hammarby FF, rated 41.8 overall by Field Insider's model, ranking 4th of 244 in the Allsvenskan and 1803rd of 2861 U-23 players tracked. An emerging talent, he has been an ever-present this season (92.1% of available minutes). His defensive output reads 3.58 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 39 — a strong campaign that ranks top 24% of the 17 defensive midfielders in the Allsvenskan, on 3 goals, 1 assist and 3.584 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 23 → 39). Across the 3 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 42, top 12% of the 17 defensive midfielders in the Allsvenskan. At 22 Karlsson is still climbing toward his ceiling, and a market index of 14.3 reflects that trajectory.
A career still climbing — Karlsson is at his peak right now, and the curve hasn't flattened.
3.58 tackles, blocks & interceptions per 90 — solid defensive volume, with 13 clean sheets across 28 appearances. Behind a title-challenging side (2nd of 16) 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 3 goals and 1 assist — a useful bonus from the back.
With a Rating of 41.8, Karlsson carries the 2nd-highest potential of the defensive midfielders in the Allsvenskan (top 12%). Defensively he reads as solid defensive volume (3.58 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 1.9×) 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 (~15), then tapers with age. At 22, Karlsson sits on 14.3, still climbing toward its peak. The blue line is Karlsson's projected Rating — 41.8 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.
No transfer news found for this player.
