Im sure that if union will win against dortmund. So far union has been showing us how good their result in the bundesliga. There's no doubt of union has a big chance to win against dortmund. Dortmund was getting draw against bayern last week. It seems like the performance from dortmund is also decreasing a little bit as well. This will become a pretty interesting match for sure.
Yes, it is indeed very possible for Union Berlin in the match against Dortmund, because so far Union Berlin is still very consistent in winning matches with teams in the Bundesliga and it is clearly still very possible for Union Berlin to win again against Dortmund. But it would be extraordinary if Dortmund were able to attack Union Berlin and win that match, because if Dortmund were able to win, the competition in the Bundesliga standings would be even more exciting this season.