Frank Ronstadt

Following his move to FC Viktoria Köln, Ronstadt's current-season form is level with last season (Season 8→8), while his Rating eased 44→23. His peak season for form remains 2022/23 (Season 18).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2025/26	FC Viktoria KölnLoan · 11th	29	1	0	6.52	23	8
2024/25	1. FC Kaiserslautern · 7th	19	0	1	6.55	44	8
2023/24	1. FC Kaiserslautern · 13th	5	0	0	6.74	42	2
2023/24	SV Darmstadt 98 · 18th	4	0	0	6.65	50	0
2022/23	SV Darmstadt 98 · 2nd	24	2	1	6.82	56	18
2021/22	SV Darmstadt 98 · 4th	14	0	0	6.54	53	10

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 2 earlier seasons and 7 youth-team spells in the full career.

Scout report

Squad depthFull-back

F. Ronstadt is a 29-year-old full-back at FC Viktoria Köln, rated 23.1 overall by Field Insider's model. An experienced operator, he has been a fringe squad member this season (23% of available minutes). His defensive output reads 1.49 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Ronstadt.

On the season, Ronstadt graded 8 for current form (age-blind), on 3 clean sheets and 1.487 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 8 → 8). Over the 6 seasons on record his form has trended upward, peaking in 2022/23.

On long-term talent our Rating reads 23. At 29 Ronstadt is in his prime years, and a market index of 2.4 reflects that trajectory.

From the career report

Read the full career report →

Past his 2022/23 peak — the recent trend is downward, so buyers are paying for what's left, not what was.

Peak: 2022/23Trending downRemarkably consistent4 clubs

23.1

Ratingi

below regular-starter level

8.3

Seasoni

below regular-starter level

23%

Minutes

limited game time

1.49

Def. actions / 90

light defensive volume

Output in context · FC Viktoria Köln finished 11th of 20 · a mid-table side

Apps

1.49

Def. / 90

—

Tackles

Interceptions

Clean sheets

1.49 tackles, blocks & interceptions per 90 — light defensive volume, with 3 clean sheets across 29 appearances. Going forward he chipped in 1 goal and 0 assists — a useful bonus from the back.

Watch points

Game time. Only 23% 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 23.1 overall — below regular-starter level. Defensively he reads as light defensive volume (1.49 tackles, blocks & interceptions per 90). Experienced and reliable, but the value curve is easing (1.1× now → 0.8× projected in three years).

Generated from Field Insider's rating model · AI-written analysis to follow.

Per 90 & availability

Minutes played %23%

Available fixtures38 of 38

Goals / 900.114

Assists / 900

Goal contribution / 900.114

Defensive actions / 901.487

Player flow

Goal involvements1

Cards / 900.457

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 (~9), then tapers with age. At 29, Ronstadt sits on 2.4, past its peak and easing. The blue line is Ronstadt's projected Rating — 23.1 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.

Season statistics

Bars = where he ranks among full-backs in the 2. Bundesliga with 600+ minutes this season.

Shooting

Goals1

Passing

Assists0

Defending

Interceptions8

Blocks5

Yellow/red cards

Yellow cards3

Red cards1

Transfer history

€0.1M total transfer fees · 5 moves

1. FC Kaiserslautern(back from loan)Jun 2026 – now

FC Viktoria Köln(on loan)Sept 2025 – Jun 2026

1. FC KaiserslauternJan 2024 – Sept 2025€ 50K

SV Darmstadt 98Jul 2021 – Jan 2024Free

WWürzburger Kickersuntil Jul 2021

Werder BremenJul 2018 – Jul 2021

Hamburger SVuntil Jul 2018

About F. Ronstadt

Frank Ronstadt is a 29-year-old full-back who plays for 1. FC Kaiserslautern, born on July 21, 1997 in Hamburg, standing 179 cm tall. He is from Germany.

This season

In the current season, F. Ronstadt has made 29 appearances with 1 goal and 0 assists across 787 minutes, with 3 yellow cards.

Field Insider's view

Field Insider currently rates F. Ronstadt at 23.1 with a Season form score of 8.3. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 13 recorded seasons, F. Ronstadt has totalled 272 club appearances with 17 goals and 2 assists for 7 different clubs. His busiest campaign came in 2018/19, with 30 appearances for Werder Bremen II.

F. Ronstadt's career has also included time at FC Viktoria Köln, SV Darmstadt 98, WWürzburger Kickers, Werder Bremen and Hamburger SV.

Transfer news

No transfer news found for this player.

Profile

Season stats

Career

Scout report

Output in context · FC Viktoria Köln finished 11th of 20 · a mid-table side

Watch points