Nordsjaelland was somewhat of an unknown entity before Tuesday night.
In a must-win game for Chelsea, the Blues were expected to steamroll over the side from Denmark. Take one look at the 4-0 score, and you would say that they did exactly that.
However, it was a tougher battle than expected, and we learned a lot about the skill and grit of the Danish champions.
That was not the only thing that we learned, however, and what follows are five things that we can take away from this Champions League group victory.