Fortuna Sittard v Ajax

Eredivisie Matchweek 6 · Saturday 12 September 2026, 20:00 CEST (18:00 UTC) · Fortuna Sittard Stadion

Match evidence and availability measured to the evening of Friday 11 September 2026. Neither club has published a starting eleven, so no line-up is predicted below.

The FairEleven view

We lean to Ajax, and we hold that lean loosely — because the biggest number in this match is one nobody can explain, including us.

Start with what expected goals means, because everything here runs through it. Every shot in a match can be scored for how likely it was to go in, given where it was taken from and what was around it. Add those up and you get a figure for how many goals a side's chances were worth. It is not a prediction and it is not a verdict; it is a count of chances, weighted by quality.

By that count, Fortuna Sittard have created 4.47 across five matches and have scored eleven. They have faced 12.27 and conceded nine.

Ajax, across four, have created 8.55 and scored nine. They have faced 5.35 and conceded five.

One of these sides has results that follow its chances almost exactly, in both directions. The other has results that depart from its chances by a very long way, in both directions at the same time — scoring far more than the chances suggest and conceding far fewer.

Our confidence in the result is low. Our confidence in what this match is actually about is higher than that, and we are deliberately keeping the two apart.

Why

The number that does not balance

Fortuna are 6.53 goals ahead of what their chances have been worth going forward, and 3.27 goals behind what their opponents' chances have been worth coming back. Both at once, over the same five matches.

The attacking half can be taken apart one step further, and it is worth doing. There is a second measurement that scores a shot after it has been struck, counting where in the goal it actually went — so a chance worth little before the shot can be worth a great deal once it is heading for the top corner.

Fortuna's chances were worth 4.47 before they were struck. Once struck, they were worth 7.92. And they produced eleven goals.

So the gap arrives in two roughly equal steps: 3.45 from the chance to the strike, and 3.08 from the strike to the goal.

Here is what we will not do with that. We will not call it finishing quality. We will not call it shot selection, or a counter-attacking structure, or a goalkeeper having a superb month, or luck. Nobody has published a description of how this side plays — not their build-up, not their pressing, not their defensive shape, not their transitions, not their set pieces. Five things a preview would normally lean on, and all five are blank.

A pattern with a cause has a shelf life you can reason about. A pattern without one does not.

The half we cannot take apart at all

The defensive side of the gap is worse served than the attacking side, and we would rather say so than pretend it is symmetrical. We hold the after-the-strike measurement for each club's own shooting, but not for the shots they face. So Fortuna conceding nine goals from chances worth 2.45 per match is a single step from one number to another with nothing in between.

That matters for how the match is read. If you expect the attacking overshoot to correct on Saturday but quietly expect the defensive one to hold, you have chosen which half of one unexplained pattern to believe. There is no ground here for choosing.

Both sides are better away from home, and this is a home fixture

This is the part that runs against instinct.

Fortuna have taken seven of their ten points away from home. Away: three matches, two won, one drawn, eight scored and six conceded. At home: two matches, one won and one lost, three scored and three conceded.

Ajax have won both away matches without conceding a goal. Six scored, none against. Their two home matches have produced one point, three scored and five conceded — every goal they have conceded this season has been conceded at home.

Both records point the same way, and the way they point is away from the venue.

Now the honest size of it. That is two and three matches per club per venue. Ajax's two clean sheets came against the two smallest chance counts they have faced, 0.51 and 0.82, so we cannot separate the away defending from the away opponents. At home they faced 1.61 and 2.41. This is a split in two small records, not a property of either club, and nothing anywhere offers a reason for it. We carry it as a second factor and not as a first.

Ajax's centre of defence, and the sentence we are not writing

Ajax's own record names centre-back as the squad's sharpest weakness. Both recognised senior centre-backs left the club in the transfer window. A further defender was named unavailable in July. The one defender signed for the position had not played a minute for the club at the point that record was last written.

And we are not going to tell you Ajax will therefore defend badly. Their own record refuses that in terms, and it is right to: neither departed player had established a competitive partnership this season, so this is a squad that lost players it was not actually using. They have conceded nothing in two away matches since.

What we can say is narrower, and it is still a real question. Which two players defend the middle for Ajax is genuinely unknown, and it will stay unknown until a team sheet appears. That is why this sits fourth among the things we think decide the match rather than first — not because it is unimportant, but because we cannot check it.

Ajax are the only side here with anything stated about how they play

Their head coach has said what he wants: seize the initiative, seek the ball in the opponent's half, win it back quickly and high up the pitch when it is lost.

That is a stated intention, and we are careful with the difference. No account of any Ajax match this season sets out where they actually press, how high they defend, or where they win the ball back. So one side has published principles and no observed behaviour, and the other has neither. Any reading of this match that turns on pressing is a reading with nothing under it.

What would change this view

Fortuna Sittard creating more than their opponent. They have not done it once in five matches — not against PSV, not in either away win. It would be the first evidence that the chance count is measuring them badly rather than measuring them accurately, and it would go against our reading directly.

Ajax finishing with the larger chance count and losing anyway. That is the shape of four of Fortuna's five matches and it would mean we were right about the mechanism and wrong about the match. We would rather be visibly wrong in that particular way than write a view that cannot be wrong at all.

Ajax conceding first. They have not conceded a goal away from home this season, and we have never seen this side chasing a match on the road.

One caution on all three. They are signals, not switches. A dismissal, a goal in the opening minutes, or a serious injury can make any of these counts meaningless — Fortuna's heaviest defeat of the season came with ten men from the fifth minute, and the figures from it describe a numerical disadvantage rather than a football team. We will judge the number and the circumstances together, or not at all.

The strongest case against us

That five matches of beating the chance count is itself five matches of evidence, and we are the ones using the wrong instrument.

Fortuna have already done this against PSV, against AZ Alkmaar and away at FC Groningen. Our view requires the sixth match to be the one where it stops, and we cannot point to a single thing that distinguishes the sixth match from the five before it. We do not know why it started, so we have no business saying when it ends.

Add that they are at home only in the narrow sense that the fixture is theirs; that Ajax have lost their most recent match, at home, conceding three; and that Ajax's own squad changed in the final days of the window in ways nobody has yet observed on a pitch. That last point cuts both ways and we refuse to spend it in either direction — four players arriving with no minutes between them tells you the squad changed, and nothing whatever about whether it is better.

Market Lens

Football-derived only. FairEleven does not use betting-market data in its analysis, and none was gathered here. Each judgement below carries its own confidence, and they do not borrow from each other — a low confidence about the result does not make us less confident about a mechanism.

1. Fortuna Sittard's ten points are being read as a description of the side, and the chance count says they are not. — Medium-high confidence, held above our view of the result. They have been out-created in every single match, by five different opponents, home and away, in wins and in defeats. Against us: five matches of beating that count is a real record, and nobody has demonstrated that the chance count is the better description of this team. Why not higher: no mechanism is evidenced, and a quantity you cannot explain is a quantity you cannot project. What would change it: one Fortuna performance in which they create more than the opposition.

2. The home fixture is being treated as an advantage, and both clubs' own records point the other way. — Low confidence. Seven of ten points away for one side; six goals and no concessions away for the other. Against us: two and three matches per venue, and the away clean sheets came against the weakest attacking returns either side has faced. Why not higher: nothing in any source offers a reason for a venue effect at either club, and four matches cannot establish one. What would change it: essentially any single result, which is exactly why we rank it second.

3. Ajax's reshaped squad is being read as a weakness. — We decline to grade this one, and the refusal is the judgement. Four players joined with no observed league minutes between them, three of them carrying a fitness qualification from the head coach, and one of those three is now injured. What that does to this team has been measured by nobody, and we are not going to be the first to pretend otherwise. The most discussed thing about Ajax is the thing least supported by evidence, in either direction.

What none of this settles is the scoreline. The chance count belongs to Ajax and the last five results belong to Fortuna, and the honest position is that those two things are pulling against each other. No score is predicted and no probability is attached to anything above.

The supporting evidence

Fortuna Sittard. Five matches, ten points, eleven scored and nine conceded: 2-2 away at PSV (chances worth 0.71 against 2.63), 3-1 at home to SC Cambuur (1.88 against 2.03), 0-2 at home to AZ Alkmaar (0.24 against 4.69), 3-2 away at FC Groningen (0.99 against 2.14), 3-2 away at ADO Den Haag (0.65 against 0.78). That averages 0.89 created and 2.45 faced per match. Their after-the-strike figure exceeded their pre-shot figure in all five. No formation is stated for them here, and the reason is specific: the same eleven has been rendered two incompatible ways, a back three on one reading and a back four on another, and no club source has ever described a preferred system.

Ajax. Four matches — one fewer than Fortuna, which is why we avoid comparing their totals directly — seven points, nine scored and five conceded: 2-0 away at PEC Zwolle, 2-2 at home to sc Heerenveen, 4-0 away at Telstar, 1-3 at home to PSV. Their chance creation has barely moved across all four: 2.09, 2.32, 2.17, 1.97, against four different opponents at two venues with three different results. That is the steadiest quantity in this fixture. No formation is stated for them either — one publisher rendered the same Ajax eleven as one shape before kickoff and a different shape at full time, with no substitution in between, and their head coach has said that playing systems do not much interest him.

Availability, and only what has actually been recorded. Five Fortuna Sittard players carry current absence records: Sven Simons with a hamstring injury since early July, Iván Márquez since early July, Kristoffer Peterson since early August, Edouard Michut since the end of August, and Siebe Wylin. The record for Wylin contradicts itself — he appears twice, with overlapping start dates a day apart and two different endings, one giving early October and one giving none at all. We report that he is out and we adopt neither ending.

Three Ajax players carry current records: Aaron Bouwman with a lung contusion from 6 September, Simon Adingra with an ankle injury from 3 September, and Daley Blind, out since mid-August with no return date published by anyone.

Adingra is worth a line on his own. He joined on loan on the final day of the transfer window, has not been available since he arrived, and is now injured. So this is a signing whose effect on this team has never been observed by anybody — and that is the whole of what can be said. What he would have added is unknown; what his absence costs is unknown; we are estimating neither.

Nobody at either club is treated as unavailable merely for being absent from a team sheet. Four further absence records exist across the two clubs, some dating back to early 2025, and every one of them belongs to a player who is not in the current squad. We do not count them, and we do not name anybody from them. Whether any player is away with a national team for this fixture is not something we hold information about, and nothing is assumed either way.

Watch the two chance counts. Everything above turns on whether the one that has described five straight Fortuna Sittard matches badly describes a sixth the same way.