Domestic-league season · Sparta Rotterdam.
Missed 6 of Sparta Rotterdam's ~34 games this season through 6 injury absences (injury, hamstring, injured). He still appeared 11 times — a solid return given how little of the season he was available. His rating is judged mainly on the games he was fit to play.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Eredivisie | 11 | 0 | 1 | 446 | 6.61 |
 KNVB Beker | 3 | 0 | 0 | 130 | 6.9 |
Kleijn's current-season form is up 150% on last season (Season 6→15), while his Rating climbed 61→63. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | Sparta Rotterdam · 10th | 11 | 0 | 1 | 6.61 | 63 | 15 |
| 2024/25 | Sparta Rotterdam · 12th | 27 | 0 | 1 | 6.8 | 61 | 6 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
M. Kleijn is a 21-year-old full-back at Sparta Rotterdam, rated 62.9 overall by Field Insider's model. A young player, he has been a fringe squad member this season (17.7% of available minutes). His defensive output reads 5.25 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Kleijn.
On the season, Kleijn graded 15 for current form (age-blind), on 2 clean sheets and 5.247 defensive actions per 90.
Year-on-year, that's a clear step up on last season (Season 6 → 15).
On long-term talent our Rating reads 63. At 21 Kleijn is still climbing toward his ceiling, and a market index of 72.5 reflects that trajectory.
Read the appearance count in context: Kleijn missed 6 games through injury (injury, hamstring, injured) out of roughly 34 this season. The 11 he did play is a solid return on the time he was fit, and his ratings are weighted toward those games rather than the ones he sat out injured.
Kleijn is operating at his career peak — the 2025/26 level is the level.
5.25 tackles, blocks & interceptions per 90 — high defensive volume, with 2 clean sheets across 11 appearances. Going forward he chipped in 0 goals and 1 assist — a useful bonus from the back.
Rated 62.9 overall — a strong, regular top-tier starter. Defensively he reads as high defensive volume (5.25 tackles, blocks & interceptions per 90), with a bit more on the ball than most in the role. At 21 the trajectory points up — potential sits near its ceiling (97/100) and market value should climb as minutes and output follow. With this floor already at 21, 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.
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 (~81), then tapers with age. At 21, Kleijn sits on 72.5, still climbing toward its peak. The blue line is Kleijn's projected Rating — 62.9 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.
