Borussia Dortmund or Bayern Munich will be crowned champion on Saturday, capping off the tightest Bundesliga title race in years.
Bayern will be hoping for a Dortmund blunder as they travel to Cologne at the same time as Dortmund, and Dortmund currently leads Bayern by two points and needs to defeat Mainz at home to end Bayern's 10-year reign.
If Bayern defeats Cologne, Dortmund's draw will not be sufficient because Bayern has a better goal differential than Dortmund. "We must triumph once more.
Sebastian Kehl, the sporting director at Dortmund, said that's all that matters.
Dortmund would win the German league for the first time since Juergen Klopp guided the "black and yellows" to consecutive victories in 2011 and 2012. Ever since, Bayern has had success.
Even if Mainz does Bayern a favor and pulls off an upset on Saturday, the season will be viewed as a failure because the Bavarian powerhouse doesn't already have the title locked up.