Union Berlin is playing perfectly right now. They do not have even one loss in the last 5 matches. And I believe they can actually give Bayern Munich good competition if they want. The way they are playing right now I think they are actually capable of it. But we all know that Bayern Munich is a very good team and they can perform very well even if they are down in points. And right now they are actually one point ahead.
So, I do not think it is going to be a problem for Bayern Munich to hold on to the first position. They might actually lose it momentarily. But they should be able to retain it.
To be honest I was quite surprised, Union Berlin really showed strong determination and once again became a strong competitor for Bayern Munich in the Bundesliga standings. their hard work paid off, Urs Fischer's squad swept five games with a win in the second half of the season. but by the way, Union Berlin has a tough game going to the Johan Cruijff Arena, home of Ajax. and if in the end, Union Berlin must be conquered by Ajax later. I doubt Berlin will continue to compete in the Bundesliga with its positive trend. moreover, Berlin has one match left against Bayern at the Allianz Arena.
On the other hand, Bayern Munich now has competitors who are sticking tight on the standings board. and only one point adrift, from Union Berlin. however, we agree that Munich's dominance in this competition will be difficult to break even though it is only 1-3 points away from Berlin and Dortmund. but by the way, at least the Bundseliga are getting more competitive nowadays. and the fight for the league trophy, wide open for teams below Munich.