The Super-Sub Paradox: Julian Nagelsmann and the Deniz Undav Dilemma

In the 88th minute of a World Cup friendly against Ghana, Deniz Undav did exactly what he is paid to do: he scored. The strike secured a 2-1 victory for Germany, sending the home crowd in Stuttgart into a frenzy and cementing Undav’s reputation as a clinical finisher. But in the aftermath, the celebration was dampened not by the opposition, but by the man in the dugout.

Julian Nagelsmann, the 38-year-old Bundestrainer, offered a critique that felt jarringly dissonant with the result. Despite the winning goal, Nagelsmann remarked that Undav “was not good” until that moment, describing his performance as “relatively pale” with few impactful contributions prior to the late heroics. It is a tension that has come to define the relationship between the coach and the striker—a dynamic that local media have described as “complicated.”

For global observers, the situation presents a puzzling contradiction. Undav, 29, is currently one of the most lethal strikers in European football. In the 2025/26 Bundesliga season, he has netted 18 goals, making him the top-scoring German player in the league, trailing only Bayern Munich superstar Harry Kane. Yet, when he swaps the white of VfB Stuttgart for the blue of the national team, he is relegated to the role of a “permanent substitute.”

The Logic of the ‘Super-Sub’

Nagelsmann’s refusal to start Undav isn’t based on a lack of goal-scoring ability, but on a rigid tactical philosophy regarding “roles.” According to the national coach, Undav is a specialist—a “super-sub” whose effectiveness peaks when the opposition is already fatigued. Nagelsmann argued that Undav’s qualities tend to fade when required to perform the heavy lifting and hard work necessary in the first 60 to 70 minutes of a match.

This distinction is critical for Nagelsmann as he prepares the squad for the upcoming World Cup. The coach has been vocal about the necessity of maintaining “defined roles” to preserve his own credibility. He suggested that if he were to deviate from these established roles now, the internal logic of the squad would collapse. In a blunt assessment following the Ghana match, Nagelsmann dismissed the idea of Undav becoming a regular starter for the World Cup as “rather unlikely.”

To place it simply: Nagelsmann believes that if Undav had to “march” for 70 minutes before his goal, he might not have had the legs to finish it. He views Undav as a precision tool to be deployed late, rather than a foundation to build a game around.

A Growing Divide in Opinion

While Nagelsmann stands by his tactical rigidity, the footballing community is less convinced. The debate has sparked a divide between the coaching staff and external observers who prioritize raw output over theoretical roles. Former striker Nils Petersen has been among the most vocal critics, praising Undav’s efficiency and criticizing Nagelsmann’s hesitation to utilize him more fully.

The pressure is further amplified by Undav’s standing in his home region. In Stuttgart, Undav is a hero, with many supporters and experts in the Swabian dialect advocating for his inclusion in the starting XI. The striker himself seems to embrace the local adoration; following the Ghana victory, he was linked to a video where he responded to being called the “König von Cannstatt” (King of Cannstatt) with, “I’ll take that!”

The statistics largely support the “joker” narrative—Undav has indeed been more effective in the closing stages of matches—but the gap between his club form and his international status continues to widen. In seven appearances for the senior national team, Undav has scored four goals, but five of those appearances have seen him come off the bench.

The World Cup Stakes

As the World Cup approaches, the Undav situation serves as a litmus test for Nagelsmann’s management style. The coach is balancing two competing needs: the tactical discipline of a structured system and the unpredictable brilliance of a player in peak form. By prioritizing the “role” over the “result,” Nagelsmann is gambling that his system will outweigh the benefit of starting his most prolific domestic scorer.

For Undav, the path to the starting lineup remains blocked by a coach who values the process of the first hour more than the result of the last ten minutes. Whether this rigidity will be viewed as a masterstroke of discipline or a stubborn oversight will depend entirely on Germany’s performance on the world stage.

For now, Undav remains the ultimate weapon in the back pocket—a player who can win a game in a heartbeat, even if his coach isn’t entirely convinced he belongs there from the start.

The national team will continue its preparations as they finalize the roster for the summer tournament. Fans and analysts alike will be watching to see if the “King of Cannstatt” can finally convince Julian Nagelsmann that he is more than just a luxury substitute.

What do you think? Should Nagelsmann prioritize tactical roles or reward the form of his top domestic scorer? Let us know in the comments.