In last month in Germanian third league often come very little goals in almost every game. Duisburg played in last 5 games all 5 times with under 2.5 goals in a row. They are in bad form, they can't score more than one goal today.
Wehen played 3 games in a row with under 2.5 goals. They are 5th place, but they are in bad form, and I think they will play defensive today, and try to not concede goal.
My pick: under 2.5 goals.