Domestic-league season · Slovan Liberec.
Following his move to Slovan Liberec, Koubek's current-season form is up 0% on last season (Season 0→19), while his Rating eased 30→1. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Slovan Liberec · 6th | 33 | 0 | 0 | 7.03 | 1 | 19 |
| 2023/24 | FC Augsburg · 11th | 3 | 0 | 0 | 7.4 | 30 | 0 |
| 2022/23 | FC Augsburg · 15th | 11 | 0 | 0 | 7.02 | 41 | 4 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
T. Koubek is a 33-year-old goalkeeper at Slovan Liberec, rated 0.7 overall by Field Insider's model, ranking 269th of 320 in the Czech Liga. A seasoned veteran, he has been an ever-present this season (94.3% of available minutes). Below: strengths, watch-points, market-value outlook and the latest transfer news on Koubek.
Judged on this season alone, Koubek graded 19 — a solid campaign that ranks top 31% of the 26 goalkeepers in the Czech Liga, on 10 clean sheets across 33 appearances.
Year-on-year, that's a clear step up on last season (Season 0 → 19). Across the 3 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 1, 20th of 26 of the 26 goalkeepers in the Czech Liga. At 33 Koubek is into the veteran stage, where the age curve weighs on the projection, and a market index of 0 reflects that trajectory.
A career still climbing — Koubek is at his peak right now, and the curve hasn't flattened.
10 clean sheets in 33 appearances (30% of games). Keeping that many behind a relegation-threatened side (6th of 6) — a side that concedes more — points to a busy, productive season between the posts.
With a Rating of 0.7, Koubek carries the 20th-highest potential of the goalkeepers in the Czech Liga of 26, and he is posting that for a relegation-threatened side (Slovan Liberec finished 6th of 6) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. A near ever-present keeper carrying the gloves this season. Veteran phase — a short-term, lower-fee proposition as both level and value decline (0.7× and falling).
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 17–37 (~0), then tapers with age. At 33, Koubek sits on 0, at or near its peak. The blue line is Koubek's projected Rating — 0.7 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.
