Great story how he grew up an 1860 Munich fan and was set to sign for them, when one of their players smacked him in the face during an under 14s game. Which prompted him to sign for the city's lesser team Bayern instead, with obvious long term consequences!
Die Ohrfeige "The Slap" is this regarded as a significant moment in German football history.
Ironically the chap who hit the Kaiser was called King (Gerhard KΓΆnig).