S. Sonnenberg

Sonnenberg's current-season form is down 61% on last season (Season 18→7), while his Rating eased 40→27. His peak season for form remains 2022/23 (Season 38).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	FC Saarbrücken · 15th	19	0	0	6.87	27	7
2024/25	FC Saarbrücken · 3rd	17	2	0	6.99	40	18
2023/24	Heracles · 14th	25	1	0	6.73	61	13
2022/23	Heracles · 1st	35	0	1	6.95	56	38
2021/22	Heracles · 16th	9	0	0	6.57	56	5

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 2 earlier seasons and 3 youth-team spells in the full career.

Germany · international

Side	Apps	G
Germany U17	3	0

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

Scout report

Squad depthBall-winning Central defender

S. Sonnenberg is a 27-year-old central defender at FC Saarbrücken, rated 27.2 overall by Field Insider's model. In his prime years, he has been a fringe squad member this season (13.6% of available minutes). His defensive output reads 5.81 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Sonnenberg.

On the season, Sonnenberg graded 7 for current form (age-blind), on 1 clean sheet and 5.806 defensive actions per 90.

Year-on-year, that's a drop on last season (Season 18 → 7). Over the 6 seasons on record his form has drifted down, peaking in 2022/23.

On long-term talent our Rating reads 27. At 27 Sonnenberg is in his prime years, and a market index of 5.1 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: 2022/23Stepped up 2021/22

27.2

Ratingi

below regular-starter level

Seasoni

below regular-starter level

13.6%

Minutes

limited game time

5.81

Def. actions / 90

high defensive volume

Output in context · FC Saarbrücken finished 15th of 20 · a lower-table side

5.81

Def. / 90

Tackles

Interceptions

Clean sheets

5.81 tackles, blocks & interceptions per 90 — high defensive volume, with 1 clean sheet across 19 appearances. Doing that for a lower-table side (15th of 20) is harder than the bare numbers suggest: a back line under more pressure has to defend more often and protects fewer leads, so the volume — and any clean sheets — carry real weight.

Strengths

Defensive volume. 5.81 tackles, blocks & interceptions per 90 — does the unseen work.

Watch points

Game time. Only 13.6% 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 27.2 overall — below regular-starter level. Defensively he reads as high defensive volume (5.81 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.

Per 90 & availability

Minutes played %13.6%

Available fixtures38 of 38

Goals / 900

Assists / 900

Goal contribution / 900

Defensive actions / 905.806

Player flow

Goal involvements0

Pass accuracy %84

Cards / 900.774

Foul involvement / 903.097

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 (~5), then tapers with age. At 27, Sonnenberg sits on 5.1, at or near its peak. The blue line is Sonnenberg's projected Rating — 27.2 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.