Union Berlin this season seem to be suffering a fate that I personally can't tell the exact root cause but then the obvious looks like an effect from the change of coach, they seem to be yet aquinted well enough with this coach and his style so most players are still finding it difficult to cope but then they have still got good quality.
This season is not favorable for Union Berlin at all in all competitions.
I can’t even tell what exactly transform the team from being one of the best teams in Bundesliga last season to one of the worst team based on performance this season.
They lost nine matches in Bundesliga so far this season and they won just two which is a very bad stat for them this season, and they couldn’t even make more effort in the Champions League to make it to either Europa League because as it stands now, they are at the bottom of group C and second to the last in the Bundesliga table.
Leverkusen on the other hand continually keeps the maintaining their spot at the top of the league table with their points difference been a bit more that it was from Bayern Munich who happens to be the most fierce contender this season, it's quite interesting that at this point Bayern Munich is yet to be at the top of the table, which indicates that there's possiblity there could be a change in the leagues dominance this season.
I am having more confidence on Bayern Leverkusen to win the Bundesliga title this season because they look more competent and serious than Bayern Munich and Dortmund.