Question: The 1973 DFB-Pokal Final included a self-subsitution by which German midfielder?
Sentence (from "1973 DFB-Pokal Final"): The 1973 DFB-Pokal Final, which decided the winner of the 1972–73 DFB-Pokal, took place on 23 June 1973 between Borussia Mönchengladbach and 1.
Relevant evidence: No