Billy van Duijl

Duijl's current-season form is down 39% on last season (Season 18→11), while his Rating held around 54. His peak season for form remains 2025/26 (Season 18).

Domestic career

Season	Club	Apps	G	A	Match	RTG	Season
2026/27	Jong AZ · 13th	2	0	0	7.3	54	11
2025/26	Jong AZ · 17th	24	0	2	7.21	53	18
2025/26	AZ Alkmaar · 7th	7	1	0	7.33	63	12
2024/25	Jong AZ · 10th	34	0	0	6.93	52	14
2022/23	FC Volendam · 14th	9	0	0	6.3	56	1
2021/22	FC Volendam · 2nd	2	0	0	6.25	48	1

Domestic-league totals per season. RTG = Field Insider Rating (potential / ceiling); Season = age-blind form that year. 2 youth-team spells in the full career.

Netherlands · international

Side	Apps	G
Netherlands U19	2	0

Career caps & goals — tournament breakdown in the full career.

Scout report

Rising assetFull-back

B. van Duijl is a 20-year-old full-back at Jong AZ, rated 52.7 overall by Field Insider's model. A young player, he has been a regular starter this season (61.8% of available minutes). His defensive output reads 3.06 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 18 for current form (age-blind), on 4 clean sheets and 3.064 defensive actions per 90.

Year-on-year, that's a drop on last season (Season 18 → 11). Over the 5 seasons on record his form has trended upward, peaking in 2025/26.

On long-term talent our Rating reads 53. At 20 Duijl is still climbing toward his ceiling, and a market index of 13.2 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

52.7

Ratingi

a solid contributor and squad regular

17.8

Seasoni

below regular-starter level

61.8%

Minutes

a regular starter

3.06

Def. actions / 90

moderate defensive volume

Output in context · Jong AZ finished 17th of 20 · a lower-table side

Apps

3.06

Def. / 90

Tackles

Interceptions

Clean sheets

3.06 tackles, blocks & interceptions per 90 — moderate defensive volume, with 4 clean sheets across 24 appearances. Doing that for a lower-table side (17th of 20) 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.

Strengths

Availability. On the pitch for 61.8% of available minutes — a dependable presence in the XI.
Ceiling. High potential at just 20 — room to grow into a bigger role.

Watch points

Few red flags. No obvious weaknesses in the current-season profile — consistency is the next test.

Outlook

Rated 52.7 overall — a solid contributor and squad regular. Defensively he reads as moderate defensive volume (3.06 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.

Per 90 & availability

Minutes played %61.8%

Available fixtures38 of 38

Goals / 900

Assists / 900.085

Goal contribution / 900.085

Defensive actions / 903.064

Player flow

Goal involvements2

Cards / 900.085

Season-by-season progression

Rating (potential)Season (form)

Value & potential by age

Market valueRating

Solid = now · dashed = projected

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 (~24), then tapers with age. At 20, Duijl sits on 13.2, still climbing toward its peak. The blue line is Duijl's projected Rating — 52.7 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.

Season statistics

Bars = where he ranks among full-backs in the Eredivisie with 600+ minutes this season.

Shooting

Goals0

Passing

Assists2

Defending

Tackles36

Interceptions17

Blocks19

Yellow/red cards

Yellow cards2

Red cards0

Transfer history

AZ AlkmaarJun 2024 – now

FC Volendamuntil Jun 2024

About B. van Duijl

Billy van Duijl is a 20-year-old full-back who plays for AZ Alkmaar, born on October 4, 2005 in Amsterdam, standing 190 cm tall. He is from Netherlands. AZ Alkmaar currently sit 1st of 18 in the Eredivisie.

This season

In the current season, B. van Duijl has made 7 appearances with 1 goal and 0 assists across 585 minutes.

B. van Duijl's next match is on August 29, 2026, when AZ Alkmaar face GO Ahead Eagles at home in the Eredivisie.

Field Insider's view

Field Insider currently rates B. van Duijl at 52.7 with a Season form score of 17.8. See the full scout report for strengths, watch-points and the market-value outlook.

Career

Across 5 recorded seasons, B. van Duijl has totalled 111 club appearances with 2 goals and 2 assists for 4 different clubs. His busiest campaign came in 2024/25, with 34 appearances for Jong AZ.

B. van Duijl's career has also included time at FC Volendam.

On the international stage, B. van Duijl has represented Netherlands U19 — 2 caps in our records.

Transfer news

No transfer news found for this player.