What is currently permitted in terms of sports depends on the incidence value. You can find this updated daily at  this site.

You can get an overview of the rules on  this German page.

Spectators are also well catered to with a wide variety of professional and amateur sporting events. Traditional sports in Bonn include the "Bonn Lion" men's foil fencing world cup tournament, the world dance champion-ships, and the German three-day event equine championships on the Rodderberg. The "Telekom Baskets" play in the German Bundesliga and inspire spectators with their home games in the Telekom Dome, located in the Bonn district of Duisdorf.