got this from another board:
And then of course no-one has mentioned the Müller record, that before always belonged to Ferenc Deák who scored 66 league goals in 34 appearances in Hungary, because of the dubious nature of one of the tournaments that Müller had participated in.
The DFL-Ligapokal (German League Cup), created for the 1972/73 season (if I recall it had something to do with the Munich Olympics) and immediately discontinued until 1997. A tournament featuring 32 teams (first and second tier), 55 games played and 426 goals scored, which would mean an average of 7.75 goals per game (!!).
It's in this tournament that Müller scored 12 goals in 5 games to make it 67 goals in all comps.