When I went to a sports school in Berlin, we received a brochure listing all the universities in Germany that promote and support competitive sports. When it became clear after my Abitur that I had to go to NRW because of sports, there was only the RUB, which offers top-class sports and studies in parallel. So my decision was easy :)
When I think about studying and top-class sport
I groan. Studies and top-class sport are damn hard to master. You always have to set priorities, which is more important at what time. One of them always has to suffer from it.