Dortmund Teen Karetsas Returns to Training After Scare

Borussia Dortmund midfielder Konstantinos Karetsas has returned to team training after suffering suspected circulatory problems during his Champions League debut against Villarreal on Sept. 8. The 18-year-old first completed individual sessions before joining his teammates, marking an important step in his recovery after being stretchered off and hospitalized. Karetsas said medical tests were reassuring and that he was feeling well, though Dortmund has not confirmed whether he will play against Stuttgart or identified a definitive diagnosis; dehydration was reportedly considered a possible factor. Club officials said there had been no prior warning signs, while sporting director Ole Book recalled that Karetsas briefly struggled to communicate during the incident.