Domestic-league season · FC Winterthur.
Following his move to FC Winterthur, Sidler's current-season form is up 450% on last season (Season 2→11), while his Rating eased 47→30. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | FC Winterthur · 12th | 28 | 1 | 3 | 6.61 | 30 | 11 |
| 2022/23 | Arminia Bielefeld · 16th | 18 | 0 | 0 | 6.48 | 47 | 2 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
S. Sidler is a 28-year-old full-back at FC Winterthur, rated 30 overall by Field Insider's model, ranking 170th of 232 in the Super League. An experienced operator, he has been a regular starter this season (60.4% of available minutes). His defensive output reads 3.4 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Sidler.
Judged on this season alone, Sidler graded 11 — a workmanlike campaign that ranks 33rd of 46 of the 46 full-backs in the Super League, on 0 clean sheets and 3.4 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 2 → 11).
On long-term talent our Rating reads 30, 37th of 46 of the 46 full-backs in the Super League. At 28 Sidler is in his prime years, and a market index of 9.7 reflects that trajectory.
A career still climbing — Sidler is at his peak right now, and the curve hasn't flattened.
3.4 tackles, blocks & interceptions per 90 — moderate defensive volume across 28 appearances. Doing that for a relegation-threatened side (12th of 12) 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. Going forward he chipped in 1 goal and 3 assists — a useful bonus from the back.
With a Rating of 30, Sidler carries the 37th-highest potential of the full-backs in the Super League of 46, and he is posting that for a relegation-threatened side (FC Winterthur finished 12th of 12) — individual numbers are harder to earn on a struggling team, so his underlying level likely sits a touch above the ranking. Defensively he reads as moderate defensive volume (3.4 tackles, blocks & interceptions per 90). Experienced and reliable, but the value curve is easing (1.2× now → 0.9× projected in three years).
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 (~16), then tapers with age. At 28, Sidler sits on 9.7, past its peak and easing. The blue line is Sidler's projected Rating — 30 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.
