How Takehiro Tomiyasu Could Change Japan’s Defense at the 2026 World Cup

2026年5月19日

How Takehiro Tomiyasu Could Change Japan’s Defense at the 2026 World Cup

Takehiro Tomiyasu’s real value to Japan is not just that he adds another defender to the squad. He raises the floor of the entire back line. If he is fit enough to play major minutes, Japan gain a defender who can handle center-back or full-back without lowering the team’s defensive standard, while also helping the first pass out of pressure.

That is why his role matters heading into the 2026 World Cup. Japan already know he can survive big matches. The bigger question now is simpler and harder: how much of Tomiyasu’s body will be available when the tournament starts?

Here is the key point: Japan do not need Tomiyasu as a utility piece. They need him as a defender who can stabilize shape, win duels, and help move the ball forward from the back.

Tomiyasu is listed in JFA’s squad materials for the 2026 World Cup cycle.
He returned to Japan duty for the March 2026 UK tour after a long absence, then was ruled out of those matches because of injury.
He already has World Cup knockout-stage experience from Qatar 2022.
His club career has shown the same thing repeatedly: he can cover multiple defensive roles without looking out of place.

TOC

First, separate selection from readiness

Being included around the national-team picture and being fully ready are not the same thing.

JFA brought Tomiyasu back for the March 2026 UK tour after a long spell away from the national team, which showed how highly the staff still rate him. But JFA then announced on March 25, 2026 that he would miss the Scotland and England matches because of injury. That matters because Japan have already qualified for the World Cup, so the standard is no longer just quality. It is whether a player can stay available through a tournament schedule.

For Tomiyasu, that is the entire starting point. Japan know what he is when healthy. The unresolved issue is whether they can count on him across several high-level matches in a short span.

Why Japan still value him so highly

There are two reasons, and both are concrete.

He has already been trusted on the World Cup stage

Tomiyasu was part of Japan’s 2022 World Cup squad. Against Spain in the group stage, he came on in the 69th minute as Japan protected a famous 2-1 win. Against Croatia in the round of 16, he started.

That is not a small detail. It means he is not being discussed as a future option or a theoretical fit. He has already been used in the exact kind of matches that decide tournaments.

He can move across the back line without breaking the structure

Arsenal said when announcing Tomiyasu’s contract extension in March 2024 that he had played in all positions across the defense and made 73 appearances for the club in all competitions. That explains why coaches keep trusting him.

JFA’s 2022 player profile made the same point from a different angle. Tomiyasu has been used at center-back for Japan, at both right-back and left-back in club football, and has even spent time in midfield earlier in his career. The important part is not the label beside his name. It is that Japan can change shape during a match without having to hide him.

What his recent club form actually tells us

Tomiyasu’s recent story is less about volume and more about what kind of player he looks like after returning.

BBC reported in February 2025 that he had undergone knee surgery, with recovery expected toward the end of that year. That report underlined how serious the interruption was. So it makes little sense to judge him against defenders who played full seasons uninterrupted.

His move to Ajax in December 2025 became the restart point.

The encouraging part at Ajax was the quality of the comeback

Ajax’s March 16, 2026 analysis of his first start against Sparta said Tomiyasu played 69 minutes, completed 83 percent of his passes, and still posted 81.3 percent accuracy in the opponent’s half. The same piece credited him with four ball recoveries and three clearances, and noted his role in Ajax’s second goal.

Those numbers matter because they show more than basic survival.

He was not only recycling safe passes deep in his own half.
He was still accurate when Ajax tried to advance the ball.
He contributed defensively right away after a long layoff.
He could affect the rhythm of the match at both ends.

That is exactly the profile Japan need. Not just a defender who clears danger, but one who can end pressure and help the team step forward again.

The three roles Japan are really asking him to fill

Tomiyasu’s World Cup value becomes clearer when it is broken into three jobs.

1. Win difficult duels at center-back

At a World Cup, Japan will face forwards with more size, pace, and direct power than most Asian qualifiers can offer. In those moments, Tomiyasu’s one-on-one defending matters.

He gives Japan a defender who can meet strikers early, survive aerial battles, and buy time when the line is under stress. That helps the whole unit, not just his own side of the pitch.

2. Keep Japan flexible when the back line shifts

Japan do not always defend in one fixed picture. A back four can tilt into a back three. A full-back may tuck inside. A center-back may need to pull wide.

Tomiyasu is valuable because those changes do not force a compromise.

He can start centrally and defend wide spaces if the shape stretches.
He can start wide and play more narrowly if Japan need an extra center-back in buildup.
He gives Moriyasu more room to manage injuries, bookings, or game-state changes without burning a substitution.

In a tournament, that flexibility is not cosmetic. It is roster management inside the match.

3. Improve Japan’s buildup from the back

This may be the most underrated part of his game.

Tomiyasu is useful because he does not treat possession under pressure as a coin flip. He can choose the pass that moves Japan up the field instead of settling for a clearance every time the press arrives.

That matters for players ahead of him. If Japan want the ball to reach creators and dribblers such as Takefusa Kubo, Ritsu Doan, or Kaoru Mitoma in better conditions, the first clean pass from defense matters. Tomiyasu can help create that first stable moment.

His role is bigger than “versatility” alone

Versatility is the easy word. It is also too small.

What stands out in the source material is the idea of responsibility. Ajax’s coverage of his return described a player who was not just filling space after months out, but helping organize the team. Ajax also presented him as an experienced addition who could bring balance to a young squad.

That is closer to what Japan need from him in 2026.

They do not simply need a defender who can stand in several spots. They need someone who can settle the line, guide the tempo, and make the players around him look safer. Tomiyasu may not lead in the same outward style as Yuto Nagatomo, but leadership from the back can also look like clean positioning, timely duels, and calm first passes.

What to watch before the World Cup

The key question is not whether Tomiyasu is useful. That has already been answered.

The real watchpoints are these:

Can he stay available over a run of matches instead of one-off appearances?
Does Japan trust him more as a center-back, or as the defender who can solve problems on either flank?
When Japan are pinned back, can he still be the duel-winner they need?
When Japan control more of the ball, can he still speed up clean progression from the back?

If Tomiyasu is fit, Japan’s defense changes in a meaningful way. It becomes harder to target, easier to adjust, and cleaner in possession. If he is not, Japan lose more than a name on the team sheet. They lose one of the few defenders in the pool who can raise the standard of the whole line rather than simply occupy a slot.

That is the real role to watch as 2026 gets closer.

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