Including a penalty shootout victory over RB Leipzig in the DFB Pokal, the caretaker manager has won since games from six after replacing Carlo Ancelotti, and his side can be backed at 21/20 (2.05) with bet365 to maintain that 100 per cent record here.
In contrast, Die Schwarzgelben have collected just one point from the last available nine in the league, but are available at 12/5 (3.40) to return to winning ways in timely fashion against their rivals.
The sides shared a 2-2 draw when they last met in August's Super Cup clash, and you can get odds of 13/5 (3.60) on them cancelling each other out once again in this one.
Five points adrift of first place when Heynckes took over, Die Roten have swiftly turned that deficit into a three-point advantage at the top of the league by winning three games from three and looking like the side that strikes fear into the hearts of their opponents.
As well as their own good form, the champions have been helped by a sudden collapse by Peter Bosz’s team, who had been looking so strong after dropping just two points from the first available 21.
It is not just in the Bundesliga where Dortmund have been found wanting, though, with their return of just one point from three league games coinciding with a run that has seen them beat only Augsburg and lower league Magdeburg in eight fixtures in all competitions.
With the momentum clearly dramatically shifted, those 21/20 (2.05) odds seem more than fair on Bayern compounding the hosts’ misery by coming out on top for the fifth time in seven league encounters between the sides.