J. Karlsson

Karlsson's current-season form is down 65% on last season (Season 17→6), while his Rating eased 31→29. His peak season for form remains 2022/23 (Season 37).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	Malmo FF · 5th	10	0	0	6.6	29	6
2025/26	Malmo FF · 6th	14	1	1	7.02	31	17
2024/25	Malmo FF	6	0	0	—	—	—
2024/25	Kalmar FF · 15th	17	0	1	6.75	32	10
2023/24	Kalmar FF · 1st	26	0	1	6.71	38	37
2022/23	Kalmar FF · 4th	26	1	2	7.11	38	37
2022/23	Sirius	13	0	1	7.11	—	—

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 2 earlier seasons in the full career.

Sweden · international

Side	Apps	G
Sweden	1	0

Career caps & goals — tournament breakdown in the full career.

Scout report

Squad depthCentral defender

J. Karlsson is a 25-year-old central defender at Vejle, rated 29.4 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (18.3% of available minutes). His defensive output reads 2.59 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Karlsson.

On the season, Karlsson graded 6 for current form (age-blind), on 1 clean sheet and 2.588 defensive actions per 90.

Year-on-year, that's a drop on last season (Season 17 → 6). Over the 7 seasons on record his form has trended upward, peaking in 2022/23.

On long-term talent our Rating reads 29. At 25 Karlsson is in his prime years, and a market index of 5.5 reflects that trajectory.

From the career report

Read the full career report →

Below his 2022/23 peak but holding a solid level — the platform for a return is there.

Peak: 2022/23Holding levelBreakout: 2022/23

29.4

Ratingi

below regular-starter level

6.2

Seasoni

below regular-starter level

18.3%

Minutes

limited game time

2.59

Def. actions / 90

moderate defensive volume

Output in context · Vejle finished 3rd of 6 · a mid-table side

Apps

2.59

Def. / 90

Tackles

Interceptions

Clean sheets

2.59 tackles, blocks & interceptions per 90 — moderate defensive volume, with 1 clean sheet across 10 appearances.

Watch points

Game time. Only 18.3% of available minutes — needs a settled run to prove the level.
Level. Rates below a nailed-on top-tier starter on our model.

Outlook

Rated 29.4 overall — below regular-starter level. Defensively he reads as moderate defensive volume (2.59 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.

Per 90 & availability

Minutes played %18.3%

Available fixtures19 of 32

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 902.588

Player flow

Goal involvements0

Pass accuracy %87

Dribble success %66.7

Cards / 900

Foul involvement / 901.725

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 (~6), then tapers with age. At 25, Karlsson sits on 5.5, at or near its peak. The blue line is Karlsson's projected Rating — 29.4 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.

Season statistics

Bars = where he ranks among centre-backs in the Superliga with 600+ minutes this season.

Shooting

Goals0

Passing

Assists0

Chances created3

Passes202

Pass accuracy87%

Possession

Successful dribbles2

Dribble success66.7%

Duels won12

Duels won %66.7%

Fouls won3

Defending

Tackles6

Interceptions2

Blocks1

Fouls committed3

Yellow/red cards

Yellow cards0

Red cards0

Transfer history

VejleAug 2026 – now

Malmo FFJan 2025 – Aug 2026

Kalmar FFAug 2022 – Jan 2025

Siriusuntil Aug 2022

About J. Karlsson

Olof Johan Andreas Karlsson is a 25-year-old centre-back who plays for Vejle, born on June 20, 2001, standing 172 cm tall. He is from Sweden. Vejle currently sit 3rd of 6 in the Superliga.

This season

In the current season, J. Karlsson has made 10 appearances with 0 goals and 0 assists across 313 minutes, averaging a 6.6 match rating over his last 10 rated games.

When J. Karlsson plays, Vejle's record this season is 5W-1D-4L — and his match ratings average 6.68 at home against 6.55 on the road.

Recent matches

August 9, 2026: 1-2 loss at home vs Degerfors IF (32 minutes, 6.3 rating)
August 2, 2026: 2-1 win away at IF Brommapojkarna (17 minutes, 6.3 rating)
July 26, 2026: 1-2 loss at home vs IF Elfsborg (11 minutes, 6.9 rating)
July 12, 2026: 4-0 win at home vs IFK Goteborg (32 minutes, 7.2 rating)
July 4, 2026: 1-0 win away at Degerfors IF (10 minutes, 6.7 rating)
May 17, 2026: 1-4 loss away at Hammarby FF (74 minutes, 5.9 rating)
May 10, 2026: 2-3 loss away at BK Hacken (10 minutes, 6.6 rating)
April 17, 2026: 1-0 win away at Djurgardens IF (16 minutes, 6.9 rating)
April 12, 2026: 3-1 win at home vs Gais (22 minutes, 6.3 rating)
April 5, 2026: 1-1 draw away at Orgryte IS (89 minutes, 6.9 rating)

J. Karlsson's next match is on September 20, 2026, when Vejle face FC Fredericia away in the 1. Division.

Field Insider's view

Field Insider currently rates J. Karlsson at 29.4 with a Season form score of 6.2. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 7 recorded seasons, J. Karlsson has totalled 154 club appearances with 3 goals and 7 assists for 3 different clubs. His busiest campaign came in 2022/23, with 26 appearances for Kalmar FF.

J. Karlsson's career has also included time at Malmo FF, Kalmar FF and Sirius.

On the international stage, J. Karlsson has represented Sweden — 1 cap in our records.

Transfer news

No transfer news found for this player.

Profile

Season stats

Also this season

Performance data · by competition

Career

Scout report

Output in context · Vejle finished 3rd of 6 · a mid-table side

Watch points