Matches between the two sides have been played almost continuously ever since a football league in Bulgaria has existed.
Levski have never been relegated from the top flight, while Slavia have missed only one season, for political reasons.
Both teams won the Bulgarian Republican Championship several times prior to the Second World War.
The match did not even finish, with Slavia being awarded a walkover in their favor, due to Levski deciding to abandon the game in the 75th minute.
The game ended in a goalless draw, after which Slavia won on penalties, thus winning their eight title overall.