Domestic-league season · Castellón.
On loan at Defensa Y Justicia — Liga Profesional Argentina: 2 apps, 0g 0a, 100 min
On loan at Defensa Y Justicia — Copa Argentina: 1 apps, 0g 0a, 90 min
The headline Season rating covers his time at Castellón; availability counts only fixtures while in this squad.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Segunda División | 26 | 2 | 0 | 1779 | 6.79 |
 Liga Profesional Argentinaat Defensa Y Justicia | 2 | 0 | 0 | 100 | 6.65 |
 Copa Argentinaat Defensa Y Justicia | 1 | 0 | 0 | 90 | — |
Following his move to Castellón, Sienra's current-season form is up 2000% on last season (Season 1→21), while his Rating climbed 44→49. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Castellón · 6th | 26 | 2 | 0 | 6.79 | 49 | 21 |
| 2021/22 | Defensa Y Justicia · 2nd | 1 | 0 | 0 | 6.2 | 44 | 1 |
| 2020/21 | Defensa Y Justicia · 3rd | 2 | 0 | 0 | 6.95 | 44 | 8 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
A. Sienra is a 27-year-old central defender at Castellón, rated 49.2 overall by Field Insider's model, ranking 281st of 449 in the Segunda División. In his prime years, he has been a rotation option this season (44.9% of available minutes). His defensive output reads 3.79 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Sienra.
Judged on this season alone, Sienra graded 21 — a workmanlike campaign that ranks 41st of 78 of the 78 centre-backs in the Segunda División, on 5 clean sheets and 3.794 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 1 → 21). Across the 3 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 49, 42nd of 78 of the 78 centre-backs in the Segunda División. At 27 Sienra is in his prime years, and a market index of 58.1 reflects that trajectory.
3.79 tackles, blocks & interceptions per 90 — solid defensive volume, with 5 clean sheets across 26 appearances. Behind an upper-table side (6th of 22) the side controls more games, so the defensive load is lighter — the value sits as much in composure and ball progression as in raw volume. Going forward he chipped in 2 goals and 0 assists — a useful bonus from the back.
With a Rating of 49.2, Sienra carries the 42nd-highest potential of the centre-backs in the Segunda División of 78. Defensively he reads as solid defensive volume (3.79 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.
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 (~58), then tapers with age. At 27, Sienra sits on 58.1, at or near its peak. The blue line is Sienra's projected Rating — 49.2 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.
No transfer news found for this player.
