Konstantinos Karetsas' Health Scare Overshadows Dortmund's Champions League Win
Dortmund’s Champions League win in Spain was supposed to be a coming‑of‑age night for Konstantinos Karetsas. Instead, it turned into a deeply worrying one.
The 18-year-old collapsed during his debut against Villarreal on Tuesday, sending shock and silence rippling through players, staff and supporters. There was no heavy challenge, no obvious trigger. He simply played a routine pass, then slowed, raised an arm towards the referee and signalled that something was wrong.
He lowered himself to the turf, sitting on the grass as teammates and opponents urgently waved for medical help. The game stopped. The tension did not.
Dortmund moved quickly to calm the worst fears. In a statement released not long after the incident, the club confirmed the problem was related to the youngster’s circulatory system.
“Konstantinos Karetsas had to leave the field due to circulatory problems,” the club said. “Kosta is doing well under the circumstances and is on his way to the hospital for further tests.”
Inside the dressing room, the mood matched the concern in the stands. Goalkeeper Gregor Kobel, speaking after the final whistle, gave voice to the anxiety and the hope running through the squad.
“I hope and I think that everything is OK and I hope that he's back and fit with us soon,” he told broadcaster Amazon Prime.
A costly summer under a cloud
Karetsas arrived at Signal Iduna Park in the summer as part of a bold reset built around elite young talent. Dortmund paid Genk around €30 million (£25.7m/$34.9m) to land the former Belgium youth international, a statement fee for a teenager expected to grow into a central figure in their midfield.
He was not the only major investment. Fellow Greece international Giannis Konstantelias joined from PAOK for €26m (£22.3m/$30.2m), the pair billed as twin pillars of a new European push.
Instead, the project has been hit by brutal misfortune.
Konstantelias suffered a serious ACL injury on his Bundesliga debut, a blow that has likely ended his season before it ever really began. Now Karetsas’ health scare has added another layer of uncertainty and left coach Niko Kovac juggling plans as the fixtures pile up at home and in Europe.
For a club that prides itself on smart recruitment and development, seeing two marquee signings sidelined so early is more than bad luck. It reshapes a season.
Guirassy delivers as Dortmund dig deep
On the pitch, the match resumed under a palpable shadow. At the time Karetsas left the field, the score was still 0-0, the contest tight and cautious.
That did not last.
The game burst into life after the interruption, turning into a 3-2 battle that demanded all of Dortmund’s resilience. In his 100th appearance for the club, Serhou Guirassy stepped into the spotlight, seizing the moment that Karetsas had been denied.
The forward struck a late brace to drag Dortmund over the line, his goals not only securing three vital points in Spain but also pushing him past Robert Lewandowski’s tally for the club. It was a milestone performance wrapped in a night that no one will remember for football alone.
The win keeps Dortmund’s Champions League campaign on course and offers some sporting relief amid a grim run of injury luck. Yet as the squad flew home and the analysis of Guirassy’s heroics began, one question lingered above all others.
How soon will Konstantinos Karetsas be back, and what will this night mean for the season Dortmund thought they were building?
