Heidenheim have a superb record against Union, with most of their meetings coming in the second-tier at the end of the 2010s, winning six of the previous nine - losing only once.
Union are back in form though and have proved tough to beat since Bjelica took over, and this could be a very cagey affair between two sides who may be satisfied with a point.
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Data Analysis
Our analysis of all available data, including recent performances and player stats, suggests the most likely outcome of this match is a Union Berlin win with a probability of 54.59%. A draw has a probability of 23.7% and a win for Heidenheim has a probability of 21.74%.
The most likely scoreline for a Union Berlin win is 1-0 with a probability of 11.2%. The next most likely scorelines for that outcome are 2-1 (9.77%) and 2-0 (9.73%). The likeliest drawn scoreline is 1-1 (11.24%), while for a Heidenheim win it is 0-1 (6.47%).