Cologne – Borussia Dortmund on fire, a new wing wizard set to go on the rampage in Sinsheim and the 'masters of efficiency' – these are just a few of the main topics to be touched on this weekend in the Bundesliga.

Keeping up with Costa

bundesliga.com has the five most important things you need to know about Matchday 2.

- © imago / Ulmer

Want more Bundesliga Action?

GET THE UPDATES!

- © imago

- © imago

- © gettyimages / Dennis Grombkowski

- © gettyimages / Matthias Hangst