FC Bayern München's first Bundesliga defeat of the season is not the only reason that Matchday 15 will live long in the memory.
bundesliga.com looks back on a weekend of high drama up and down Germany's top flight.
Gladbach's headline win
Red-hot Borussia Mönchengladbach claimed the biggest scalp of the 2015/16 campaign by turning over table toppers FC Bayern at BORUSSIA-PARK. The Foals survived a first-half onslaught, before emerging from the tunnel after the break completely transformed. Three goals in the space of 14 minutes paved the way for a 3-1 win few saw coming, whilst extending Andre Schubert's unbeaten run as a Bundesliga coach to ten matches.
Defeat to Gladbach put paid to Bayern's hopes of going the entire season unbeaten. The defending champions were outclassed in the second half on Saturday afternoon, falling to their first Bundesliga defeat since 16 May 2015 in what was also Pep Guardiola's first Hinrunde loss since joining the club in June 2013. If there was one plus point to be taken from an otherwise forgettable display, however, it was the goal-scoring return of Franck Ribery following 269 days on the sidelines.
Dortmund in title hunt
Borussia Dortmund took full advantage of Bayern's slip-up with a last-gasp 2-1 win away to VfL Wolfsburg. BVB looked like they were going to have to make do with a point after Ricardo Rodriguez scored from the penalty spot in injury time to cancel out Marco Reus' eighth Bundesliga goal of the campaign, only for substitute Shinji Kagawa to wrestle back the initiative in the third minute of added time. Thomas Tuchel's men moved to within five points of Bayern as a result and nine clear of third-in-the-table Gladbach.
Wolves' run ended
For Wolfsburg, their dreams of replicating last term's second-placed finish hang in the balance following their first home defeat in the Bundesliga since 8 March 2014 (29 matches). The Wolves would have made history if they had avoided defeat on Saturday evening, but that missed opportunity is the least of their concerns. After 15 matches, they already trail Dortmund by .
Continuing to fly in the face of tradition, Hertha Berlin returned to the top four thanks to a workmanlike 2-1 victory over ten-man Bayer 04 Leverkusen. USMNT international John Anthony Brooks' first goal of the season sealed the deal at the Olympiastadion, where the subject of European football is becoming an increasingly hot topic. Die Werkself, on the other hand, are now five points outside the UEFA Champions League places, Javier 'Chicharito' Hernandez's seventh Bundesliga goal not enough to spare them a sixth league defeat of the campaign.
Geis the conductor
FC Schalke 04 remain in contention for a top-four berth after ending a five-match winless run with a comprehensive 3-1 victory over Hannover 96. Johannes Geis made all the difference following a five-game ban, the former 1. FSV Mainz 05 midfielder dictating the rhythm right from the off as well as breaking the deadlock from the penalty spot in the second half. As Schalke head coach Andre Breitenreiter put it: "Geis' opening goal was the release."
Mainz's mini streak
Mainz fans were certainly sad to see Geis flee the nest last summer, but the 05ers have refused to let the high-profile departure of one of Germany's most gifted young midfielders define their season. Martin Schmidt's side were just too good for resurgent Hamburger SV at the weekend, Jairo Samperio on target twice in a comprehensive 3-1 win that extends their unbeaten run to five matches and takes them up to seventh in the standings.
Mind games in Cologne
FC Augsburg came away from 1. FC Köln's RheinEnergieStadion with another priceless three points in the context of their struggles towards the foot of the Bundesliga ladder. Raul Bobadilla decided the contest with a stunning free-kick, yet it was a spot of gamesmanship from Marwin Hitz that provided the game's enduring image. The Augsburg goalkeeper could be seen dislodging a piece of turf by the penalty spot after the referee had blown for a Köln spot-kick with the scores at 0-0. Oblivious to it, Anthony Modeste stepped up, slipped and saw his effort saved.
VfB Stuttgart remain in the bottom two, meanwhile, after being pegged back to a 1-1 draw by fellow strugglers SV Werder Bremen. Both sides now only have one win to show for their last five - a run of form that nevertheless pales in comparison to TSG 1899 Hoffenheim's on-going malaise. The Bundesliga's bottom club scraped a last-gasp point at stuttering FC Ingolstadt 04 on Saturday, their sole win of the campaign coming way back on Matchday 7.
Toast of Hesse
In a fitting finale to Matchday 15, SV Darmstadt 98 captain Aytac Sulu scored the only goal of the game in the Hesse Derby at Eintracht Frankfurt's Commerzbank Arena. It was the first time the promoted Lilies had won on Frankfurt soil in the Bundesliga and, to add salt into the Eagles' wounds, took them above their regional neighbours in the standings. Whatever happens between now and the onset of the winter break, Dirk Schuster's troops are guaranteed to go in at the halfway point outside the automatic relegation places.