The teams are wearing uniforms of the USFL teams the LA Express and New Jersey Generals. The "LA" on the helmet was modified into a "TA" to match the fictional team's name. Also, footage of an actual game between the two teams is used in the episode.
At the time this was broadcast the idea of playing American football anywhere in Germany would have been absurd. But in recent years American football has become quite popular, and in 2022 a NFL game will be played in Germany as a regular season game for the first time.