Four Matchweeks In: Which Eredivisie Signals Are Real — and Which Still Need Proving?

Some results still look like early-season noise. Others have repeated often enough that they should change how we view a team — even if the explanation behind them is not yet complete.

AZ have done enough to move their starting point upwards. FC Utrecht have done enough to move theirs down. Excelsior are already making their promoted-team label less useful. Fortuna Sittard keep producing an outcome that deserves attention, while FC Groningen's defensive numbers are becoming harder to ignore.

And at the top, Ajax and PSV are arriving at Saturday's meeting with different but increasingly interesting signals of their own.

Four matchweeks do not give us certainty.

They do give us enough evidence to start changing our minds.

AZ: the baseline should move

Four wins from four, 13 goals scored and three conceded is the obvious starting point.

The more important development is underneath it.

Against FC Utrecht, AZ generated 2.69 expected goals (xG). Against Go Ahead Eagles, they followed that with 2.80 xG in a 5–2 win. Those are two strong attacking outputs against very different opponents, both produced without AZ needing overwhelming possession.

The route was different.

Against Utrecht, much of AZ's shooting came from distance. Against Go Ahead, 13 of their 20 attempts came from inside the penalty area. AZ and Go Ahead actually created three big chances each, so the 5–2 scoreline should not be mistaken for complete control.

But that difference is precisely why the signal matters.

AZ did not need to reproduce exactly the same attacking pattern to produce another high-quality attacking performance.

That is enough for FairEleven to change its starting position.

AZ should now be rated more strongly than they were before the season.

That does not require declaring them title favourites or pretending four matches have revealed a settled tactical identity. It means the evidence has moved. A serious top-four challenge now looks less like an optimistic scenario and more like the level against which the next evidence should be judged.

The perfect record attracts attention.

The repeatable attacking output is the more important reason to take AZ seriously.

Utrecht: the downgrade is justified, even if the diagnosis is not complete

FC Utrecht have one point from four matches and have conceded 15 goals.

That alone demands attention. The performance against PSV makes it impossible to dismiss the start as simply unfortunate.

Utrecht attempted one shot in 90 minutes.

They scored from it.

PSV attempted 30.

The underlying chance balance was 0.22–3.16 xG, Utrecht did not win a corner, and they lost 1–6 at home.

The score itself contains some exaggeration — PSV's six goals substantially exceeded their underlying chance quality — but that does not rescue Utrecht's performance. Producing one attempt at home is an extreme attacking failure regardless of the final margin.

The mistake would be to jump from that to a complete tactical diagnosis.

Utrecht's four matches have not produced one neat statistical pattern. Their attacking output has moved from 1.54 xG to 1.06, then 2.13, then 0.22. Personnel has also been unstable, particularly in defence.

So FairEleven does not yet need to declare exactly which part of the new structure is broken.

It can make the more important call now:

Utrecht's effective team strength is currently substantially below what the individual quality of the squad suggests.

Reputation cannot keep carrying the assessment while the team on the pitch produces evidence in the opposite direction.

The route back may be tactical familiarity, personnel returning, different role combinations or some combination of all three.

Until it appears, the downgrade stands.

Excelsior: being promoted should already matter less

Excelsior have played only three league matches because their meeting with N.E.C. was postponed.

They have six points.

More importantly, the three games have already started to make the generic promoted-team assumption less useful.

The 4–0 win at Cambuur could initially be treated cautiously: another promoted opponent, opening day, limited evidence.

The defeat to PSV gave a different test.

Then came Sparta.

Excelsior won the Rotterdam derby 2–1 and produced the stronger underlying performance: 1.71–0.80 xG, 15 shots to ten and 12 attempts from inside the penalty area.

That does not establish where Excelsior belong over 34 matches.

It does change the burden of proof.

Before the season, promotion itself was a legitimate reason for caution. After three competitive Eredivisie performances and six points, future assessments should increasingly start with what Excelsior are showing at this level, not primarily with the division they played in last season.

That is exactly the sort of early assumption FairEleven should be willing to revise publicly.

The promoted-team prior has not disappeared.

It deserves less weight than it did three weeks ago.

Fortuna keep repeating something — but we should not invent the reason

Fortuna Sittard's 3–2 win at Groningen produced one of the most interesting statistical contradictions of Matchweek 4.

Groningen had 68 per cent possession, 23 shots and generated 1.89 xG.

Fortuna had nine shots and 0.93 xG.

Fortuna won.

That could be dismissed as one efficient away performance. The problem is that the broad outcome has now appeared repeatedly.

In each of Fortuna's three matches played eleven against eleven (excluding AZ, when Fortuna were reduced to ten men after five minutes), they have scored more goals than their xG:

• two goals from 0.71 xG against PSV;
• three from 1.88 against Cambuur;
• three from 0.93 at Groningen.

All three performances came with between 24 and 36 per cent possession.

That is now a real pattern in the results.

What FairEleven should not do is invent the tactical explanation before the evidence gives us one. We cannot yet demonstrate that this is a particular transition structure, a repeatable finishing skill or the work of one attacking partnership.

For now the conclusion is simpler and still useful:

Fortuna have repeatedly found ways to turn relatively limited attacking territory into goals.

Whether that survives is one of the more interesting questions of the next few rounds.

Groningen present the reverse problem.

They have now conceded ten goals in four matches. Against Fortuna they dominated territory and shot volume, but just two of their 23 attempts reached the target.

Their 1.89 xG fell to 0.83 expected goals on target (xGoT) — a measure of the quality of shots after they have actually been placed on target. One of Groningen's two goals was also a Fortuna own goal.

That does not prove Groningen have a finishing problem, nor does the available evidence let us pin their ten goals conceded on one specific defensive mechanism.

But the broader concern is now real.

Groningen are producing enough warning signs at both ends that the next explanation has to come from the football, not from dismissing two defeats as variance.

Ajax and PSV: two different signals, one much better test

Ajax have played three league games rather than four.

Their attacking numbers contain an intriguing consistency.

They have generated roughly 2.0 xG in all three matches: 1.97, 2.11 and 2.14.

Against Telstar, however, they arrived at almost exactly the same chance quality through a completely different route.

Ajax had taken 26 and 23 shots in their previous two league matches. Against Telstar they needed only 12.

They put nine of those 12 on target, and their 3.61 xGoT was substantially higher than the 2.14 pre-shot xG.

That is not yet evidence that Ajax have discovered a superior attacking formula. It is evidence that the same overall chance quality can arrive in more than one way.

Deadline week has also changed the squad around that question. Sofyan Amrabat has arrived in midfield, while Ajax added experienced defender Thilo Kehrer on loan from AS Monaco ahead of the meeting with PSV. Their impact still has to be established on the pitch.

PSV bring a different type of repetition.

Across four league matches they have consistently reached dangerous central areas in high volume against different opposition. Utrecht then allowed that volume to explode: 30 shots, 14 on target and five big chances.

But 1–6 is not the useful analytical number.

PSV produced 3.16 xG, including 2.37 non-penalty xG, and even missed a penalty. The final margin therefore ran well beyond the chance quality.

The stronger signal is that PSV continue to get into positions from which those big attacking performances can happen.

There is another repeated pattern worth carrying into Saturday:

PSV have conceded first in three of their four league matches.

That is why Ajax–PSV matters.

It is not just an early meeting between two of the league's biggest clubs. It is the first major league calibration point for two sets of evidence that have largely been built against weaker opposition.

Ajax host PSV on 5 September.

Saturday should tell us much more about which of those early patterns travel when the quality of the opponent rises sharply.

And Feyenoord? The picture just changed again

Feyenoord are harder to place cleanly.

They remain unbeaten with eight points from four matches, but consecutive 2–2 home draws against Go Ahead Eagles and ADO Den Haag have weakened the sense of control around their start.

At the same time, judging Feyenoord's attack from those first four matches has become less useful.

Ayase Ueda and Casper Tengstedt both left permanently on 31 August, while Reiss Nelson has now returned to De Kuip.

That is enough of a change in the attacking options to make the next evidence more valuable than another attempt to squeeze certainty out of the opening four rounds.

What four matchweeks have actually changed

The point of early-season analysis is not to wait until every uncertainty has disappeared.

By then there is little analytical value left.

The job is to recognise when evidence has become strong enough to change the starting assumption — while resisting the temptation to invent certainty about why.

After four matchweeks, FairEleven's position has moved.

AZ go up. The attacking output has repeated strongly enough.

Utrecht go down. Their current team performance no longer justifies the assumptions attached to the squad.

Excelsior's promoted status matters less. Eredivisie evidence is beginning to replace the prior.

Fortuna have a repeatable result pattern worth tracking. The mechanism still needs proving.

Ajax and PSV have both strengthened parts of their early case. Saturday gives us the first serious test of whether those signals survive elite domestic opposition.

There will be reversals from here. There should be.

Changing an assessment when the evidence changes is not inconsistency. Refusing to change it would be.

The season is still young. The evidence is no longer equally young.

Data: Sportmonks. Analysis and interpretation: FairEleven.