Cologne - Remaining unbeaten with a good fifth of the season already gone is no minor achievement, and something that leading Bundesliga quartet FC Bayern München, Borussia Mönchengladbach, TSG 1899 Hoffenheim and 1. FSV Mainz 05 can clearly be proud about.
In fact, never before have four teams navigated through their first seven games without a defeat, and the chances of one of them going on to lift the revered plate are high: 31 percent of the previous 55 clubs to have made it this far without succumbing have proceeded to win the title.
bundesliga.com takes a close look at just what makes it so difficult to get the better of the aforementioned foursome...
Next five fixtures (home in bold): 18 October: SV Werder Bremen; 26 October: Borussia Mönchengladbach; 1 November: Borussia Dortmund; 8 November: Eintracht Frankfurt; 22 November: TSG 1899 Hoffenheim
Next five fixtures (home in bold): 19 October: Hamburger SV; 25 October: SC Paderborn; 2 November: Borussia Mönchengladbach; 8 November: 1. FC Köln; 22 November: FC Bayern München
Next five fixtures (home in bold): 18 October: Hannover 96; 26 October: FC Bayern München; 2 November: TSG 1899 Hoffenheim; 9 November: Borussia Dortmund; 22 November: Eintracht Frankfurt
Next five fixtures (home in bold): 18 October: FC Augsburg; 26 October: VfL Wolfsburg; 1 November: SV Werder Bremen; 8 November: Bayer 04 Leverkusen; 22 November: SC Freiburg