Ajax's being eliminated by Union Berlin made me really surprised. Maybe Ajax weren't having a good season in general but they were still a solid team. I thought they would be more challenging in the Europa League at least. But Union Berlin had a quite productive day. Winning by 3-1 was showing how comfortable Union Berlin were as well.
Union Berlin are having a really great season now. They aren't good only in the Bundesliga. They have managed to reflect this effort onto the Europa League as well.
Just like you, I was also surprised to see the result that occurred in the Union Berlin Vs Ajax match, people thought that Union Berlin was just an ordinary underdog team, but in the second leg against Ajax they proved that the public's perception of them was wrong. Apart from the Bundesliga, Union Berlin really made a surprise at UEL too.