Domestic-league season · Leon.
Earlier this season at Oviedo — La Liga: 19 apps, 0g 0a, 1019 min
The headline Season rating covers his time at Leon; availability counts only fixtures while in this squad.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Liga MX | 15 | 0 | 0 | 1142 | 6.78 |
 La Ligaat Oviedo | 19 | 0 | 0 | 1019 | 6.72 |
 Leagues Cup | 2 | 0 | 0 | 120 | 6.65 |
 Friendliesat Uruguay | 2 | 0 | 0 | 92 | 7.5 |
Following his move to Leon, Fonseca's current-season form is down 45% on last season (Season 22→12), while his Rating eased 49→36. His peak season for form remains 2024/25 (Season 22).
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Leon · 10th | 15 | 0 | 0 | 6.78 | 36 | 12 |
| 2024/25 | River Plate · 5th | 35 | 0 | 0 | 6.99 | 49 | 22 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
N. Fonseca is a 27-year-old defensive midfielder at Leon, rated 35.8 overall by Field Insider's model, ranking 189th of 337 in the Liga MX. In his prime years, he has been a rotation option this season (37.3% of available minutes). His defensive output reads 4.02 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Fonseca.
Judged on this season alone, Fonseca graded 12 — a workmanlike campaign that ranks 26th of 30 of the 30 defensive midfielders in the Liga MX, on 0 goals, 0 assists and 4.019 defensive actions per 90.
Year-on-year, that's a drop on last season (Season 22 → 12).
On long-term talent our Rating reads 36, 20th of 30 of the 30 defensive midfielders in the Liga MX. At 27 Fonseca is in his prime years, and a market index of 25.8 reflects that trajectory.
Past his 2024/25 peak — the recent trend is downward, so buyers are paying for what's left, not what was.
4.02 tackles, blocks & interceptions per 90 — solid defensive volume, with 2 clean sheets across 15 appearances.
With a Rating of 35.8, Fonseca carries the 20th-highest potential of the defensive midfielders in the Liga MX of 30. Defensively he reads as solid defensive volume (4.02 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 (~26), then tapers with age. At 27, Fonseca sits on 25.8, at or near its peak. The blue line is Fonseca's projected Rating — 35.8 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.
