ratings updated 20 Aug 2026
Profile
Season stats
Full career & schedule →Domestic-league season · Estoril.
Performance data · by competition
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Primeira Liga | 1 | 0 | 0 | 90 | 6.9 |
Scout report
★ Standout performer
All Primeira Liga standouts →First senior season on record — and already on the pitch for 100% of Estoril's available minutes, one of the top game-time debuts in the Primeira Liga this season.
Isma Sierra is a 23-year-old central defender at Estoril, rated 49.7 overall by Field Insider's model. An emerging talent, he has been a fringe squad member this season (17.6% of available minutes). His defensive output reads 2.33 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Sierra.
On the season, Sierra graded 2 for current form (age-blind), on 0 clean sheets and 2.333 defensive actions per 90.
We hold a single season for Sierra, so there's no year-on-year comparison to draw yet — the read above is this campaign only.
On long-term talent our Rating reads 50. At 23 Sierra is still climbing toward his ceiling, and a market index of 19 reflects that trajectory.
Output in context · Estoril finished 15th of 18 · a lower-table side
2.33 tackles, blocks & interceptions per 90 — moderate defensive volume across 3 appearances. Doing that for a lower-table side (15th of 18) 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.
Watch points
- Game time. Only 17.6% of available minutes — needs a settled run to prove the level.
Outlook
Rated 49.7 overall — a solid contributor and squad regular. Defensively he reads as moderate defensive volume (2.33 tackles, blocks & interceptions per 90). Approaching peak years; value is still building (price multiplier 2×) with the best seasons likely ahead. With this floor already at 23, the ceiling gets tested by a step up in level — one to track.
Generated from Field Insider's rating model · AI-written analysis to follow.
Transfer news
No transfer news found for this player.
