Union Berlin
It is ranked 4th before this game, with a total of 26 points earned so far.
He is thus 5 points behind Dusseldorf, from 3, which leads to the promotion bar.
It has a single plus point against the opponent in this game, so the stake of the match is an important one.
The team does not cross a good moment, managed to get one point in the last 4 stages, after a spectacular 3-3 home with Darmstadt.
In the last game on their own ground, Union Berlin suffered the first defeat this season, 0-1 against Dynamo Dresden.
In the 8 home games played, Union Berlin has a run of 18:10, being the team with the best attack in the Bundesliga 2.
The most difficult match, theoretically, played at home by the Union so far has been against the current leader, Holstein Kiel. The Berlin team managed to win by 4-3.

Ingolstadt
We find a lower position, that is, 5, with the 25 points gathered.
It is only one point away from Union and 6 points from Dusseldorf, on 3.
Neither Ingolstadt goes through a good time. The team managed only two points in the last 3 stages, and in the last game it only got a 1-1 draw on the last ranked Kaiserslautern.
On the move Ingolstadt has a good series of 5 games without defeat, even if he met the first two ranked, Holstein Kiel and Nurnberg.
Thus, after 9 matches on the field, Ingolstadt has a positive goal of 13: 8.

Direct meetings
In the tournament match, Union Berlin managed to score 1-0 away.
The two teams also met in the 2014/15 season. Then both matches ended in a draw, 2-2 in Berlin and 3-3 in Ingolstadt.

My tip: Union Berlin vs Ingolstadt
Bookmakers expect a very balanced match and give almost equal odds to victory for the two teams.
I will go into this 1X match, meaning Union Berlin does not lose the match.
Even if he is going through a rather weak moment, Union is a solid team on his own field, and for this important match, players will certainly be mobilized.
Given the best attack on the field, Union Berlin may have great problems with the opposing goal.
Having the advantage of own ground and confidence after the victory of the tour, I think the hosts will do a good game, at the end of which will draw at least one draw.