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Profile

Full nameBilly van Duijl
PositionFull-back
NationalityNetherlands
Age20
Date of birth4 Oct 2005
BirthplaceAmsterdam
Height190 cm
Shirt number#4
ClubAZ Alkmaar
Full-back
7
Appearances
1
Goals
0
Assists
585
Minutes

Domestic-league season · AZ Alkmaar.

Also this season

Earlier this season at Jong AZEerste Divisie: 24 apps, 0g 2a, 2115 min

The headline Season rating covers his time at AZ Alkmaar; availability counts only fixtures while in this squad.

Performance data · by competition

CompetitionAppsGAMinMatch
Eerste Divisieat Jong AZ240221157.21
Eredivisie7105857.33
UEFA Europa Conference League4002446.97
KNVB Beker200516.6

Scout report

Squad depthBall-winning Full-back

B. van Duijl is a 20-year-old full-back at AZ Alkmaar, rated 63.6 overall by Field Insider's model. A young player, he has been a fringe squad member this season (19.7% of available minutes). His defensive output reads 4.77 tackles, blocks and interceptions per 90. Below: strengths, watch-points, market-value outlook and the latest transfer news on Duijl.

On the season, Duijl graded 13 for current form (age-blind), on 2 clean sheets and 4.769 defensive actions per 90.

Year-on-year, that's broadly in line with last season (Season 14 → 13). Over the 4 seasons on record his form has trended upward, peaking in 2024/25.

On long-term talent our Rating reads 64. At 20 Duijl is still climbing toward his ceiling, and a market index of 24.9 reflects that trajectory.

From the career report
Read the full career report →

A career still climbing — Duijl is at his peak right now, and the curve hasn't flattened.

Peak: 2025/26Trending upStepped up 2022/23
63.6
Ratingi
a strong, regular top-tier starter
12.6
Seasoni
below regular-starter level
19.7%
Minutes
limited game time
4.77
Def. actions / 90
solid defensive volume

Output in context · AZ Alkmaar finished 7th of 18 · a mid-table side

4.77
Def. / 90
18
Tackles
7
Interceptions
2
Clean sheets

4.77 tackles, blocks & interceptions per 90 — solid defensive volume, with 2 clean sheets across 7 appearances. Going forward he chipped in 1 goal and 0 assists — a useful bonus from the back.

Strengths

  • Attacking threat. Chips in from deep: 0.15 goal involvements per 90, useful for a full-back.
  • Defensive volume. 4.77 tackles, blocks & interceptions per 90 — does the unseen work.
  • Ceiling. High potential at just 20 — room to grow into a bigger role.

Watch points

  • Game time. Only 19.7% of available minutes — needs a settled run to prove the level.

Outlook

Rated 63.6 overall — a strong, regular top-tier starter. Defensively he reads as solid defensive volume (4.77 tackles, blocks & interceptions per 90). At 20 the trajectory points up — potential sits near its ceiling (98/100) and market value should climb as minutes and output follow. With this floor already at 20, 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.