Domestic-league season · PEC Zwolle.
| Competition | Apps | G | A | Min | Match |
|---|---|---|---|---|---|
 Eredivisie | 28 | 0 | 2 | 1857 | 6.49 |
 KNVB Beker | 2 | 0 | 0 | 169 | 7.1 |
Aertssen's current-season form is level with last season (Season 31→31), while his Rating climbed 64→67. That makes this his strongest season for form to date.
| Season | Club | Apps | G | A | Match | RTG | Season |
|---|---|---|---|---|---|---|---|
| 2025/26 | PEC Zwolle · 15th | 28 | 0 | 2 | 6.49 | 67 | 31 |
| 2024/25 | PEC Zwolle · 10th | 22 | 1 | 0 | 6.83 | 64 | 31 |
| 2023/24 | Jong Ajax · 15th | 22 | 0 | 0 | 7.04 | 54 | 28 |
| 2022/23 | Jong Ajax · 13th | 36 | 1 | 2 | 7.06 | 58 | 23 |
| 2021/22 | Jong Ajax · 7th | 3 | 0 | 0 | 6.7 | 48 | 1 |
Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year.
O. Aertssen is a 21-year-old full-back at PEC Zwolle, rated 66.6 overall by Field Insider's model, ranking 107th of 284 in the Eredivisie and 439th of 2901 U-23 players tracked. A young player, he has been a regular starter this season (64.5% of available minutes). His defensive output reads 4.7 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Aertssen.
Judged on this season alone, Aertssen graded 31 — a strong campaign that ranks top 28% of the 48 full-backs in the Eredivisie, on 4 clean sheets and 4.701 defensive actions per 90.
Year-on-year, that's broadly in line with last season (Season 31 → 31). Across the 5 seasons we hold, it's his best return yet.
On long-term talent our Rating reads 67, top 40% of the 48 full-backs in the Eredivisie. At 21 Aertssen is still climbing toward his ceiling, and a market index of 76.7 reflects that trajectory.
Aertssen is operating at his career peak — the 2024/25 level is the level.
4.7 tackles, blocks & interceptions per 90 — solid defensive volume, with 4 clean sheets across 28 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. Going forward he chipped in 0 goals and 2 assists — a useful bonus from the back.
With a Rating of 66.6, Aertssen carries the 19th-highest potential of the full-backs in the Eredivisie (top 40%), and he is posting that for a lower-table side (PEC Zwolle finished 15th of 18) — 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 solid defensive volume (4.7 tackles, blocks & interceptions per 90). 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 (~85), then tapers with age. At 21, Aertssen sits on 76.7, still climbing toward its peak. The blue line is Aertssen's projected Rating — 66.6 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.
€0.2M total transfer fees · 1 moves
No transfer news found for this player.
