[1] He was the referee during Game 6 of the 1972 Summit Series, played between Canada and the Soviet Union.
However, Dahlberg had fallen ill with a suspected case of food poisoning.
The Soviet Union decided to switch the referees Josef Kompalla (also from Germany) and Franz Baader, on the eve of the game 8.
Alan Eagleson, a key organizer from Canada of the Series had threatened to depart from Moscow, where the game was being played.
In fact, many sources consider Baader one of "the pair they (Canadian team) hated most",[2] and a "horrendous official".