Diego Demme spent 16 years building a professional football career that carried him from the lower reaches of German football to the peak of the Bundesliga and Serie A. He was part of the RB Leipzig side that grew into a European force, and the Napoli squad that ended a 33-year wait for the Scudetto. Then, in the space of four months, two serious head injuries brought everything to a halt.

On September 23, Demme announced his retirement from professional football, citing the lasting effects of those concussions as the decisive factor.

Two blows that changed everything

The first incident came on September 15, 2024, during Hertha Berlin's 2-0 defeat to Fortuna Düsseldorf. Demme took a knee to the chin and, despite initially playing on, soon began suffering headaches, dizziness, and problems with his right eye.

Four months later, a ball struck him in the temple at close range during a training session. He lost consciousness. The aftermath — recurring headaches, dizziness, and psychological difficulties — contributed to 27 missed matches across his final two seasons.

«It was a difficult situation. I felt very bad due to the concussions, and that was the first time I felt, 'What the f**k is going on?'» Demme told FourFourTwo. «I couldn't drive the car. I needed to be there for my kids, and I couldn't. I have a wife and family, and the most important thing was to be there for them, so I felt it was better to stop football.»

A career of genuine achievement

Demme came through Arminia Bielefeld and Paderborn before helping RB Leipzig win two promotions, reach the 2019 DFB-Pokal Final, and establish themselves among the UEFA Champions League's regular contenders. He then moved to Napoli, where he helped the club claim the 2019/20 Coppa Italia — their first trophy in six years — before playing a part in their historic 2022/23 Scudetto triumph.

After four and a half years in Italy, he returned to Germany in 2024, taking the captaincy at Hertha Berlin. That homecoming, unfortunately, became the setting for his final, painful chapter.

Despite interest from Italian clubs including Empoli, Cesena, Catania, and Sorrento, Demme chose not to extend his playing career. «I wanted to stop while I was healthy,» he said. «After the problems I had with my head injuries, I decided to not take any risk again on the field.»

Life after football

Retirement has not brought Demme any shortage of activity. The 34-year-old is now running two Neapolitan pizzerias in Berlin, managing the construction of his home in Kleinmachnow, and studying for qualifications in padel coaching and sports massage.

He is also training in boxing, grappling, and mixed martial arts, and has agreed to play in the Icon League — the indoor small-sided competition co-founded by Toni Kroos and Elias Nerlich — with Plyrs United. «I feel good again, and I feel like the old Diego before my injuries,» he said. «I will play the Icon League because the physical risk isn't as much as a regular Bundesliga match.»

Above all, Demme is making the most of time with his daughters, 6-year-old Gia and 3-year-old Ellie — the reward, he makes clear, that no Scudetto or Coppa Italia could ever match.