Just awhile with Union Berlin, Dortmund and Freiburg dominance in this season on Bundesliga, lately at the end season always Bayern Munich as dominance to be champion we are boring to watch Bayern always the champion every season. Bayern left 5 points from Union Berlin but keep believing lately not any team can't stop Bayern to be champion again in Bundesliga. I think for next match Bayern will try recovery to top performance after losing many points on several match before, however Bayern have winner mentality and easy back consistent performance in this season although attacking poor performance.
Behind 5 points from Union Berlin seems have to win two or three games later for Bayern Munich back to top standing position, next match against with Bayern Leverkusen seem not bigger problem get 3 points back.
Even though Union Berlin is showing a great performance in the Bundesliga so far i heavily doubt that they are able to do this for a whole season. It was pretty obvious in their games in the Uefa Europa League where they lost both of their matches against teams that are not really top tier clubs. So if not everythign is going perfectly then Union has a hard time to win matches i think and in the long run they won't be able to stay at the very top of the table. The same is probably true for Freiburg.
If you ask me, Bayern is still the big favorite to become Bundesliga champion again this season. Dortmund is just not strong enough and Leipzig had a very bad start.