Of all of Europe's top clubs, Chelsea, Real Madrid, and FC Barcelona have showed signs of potential weakness. Chelsea's defensive frailties, Madrid's midfield woes, and Barcelona's loose cohesion are all some discernible problems for these European giants.
In comparison, the loss to Manchester City seemed to be the only mistake for the Bayern Munich giants so far. With injuries mounting, it seemed as if the mighty German engine would be derailed soon enough, but Pep Guardiola allayed those fears with dominant displays in the Champions League and Bundesliga.
Fresh off an extended winter break, the Germans looked set to continue their cruise to European success. Yet, not all is as rosy as it seems for the Germans, as Kevin De Bruyne was quick to point out.
Bayern's first loss in the Bundesliga has been a long time coming, but no one expected such a significant blowout. Wolfsburg put Bayern to the sword and cut the title deficit to eight points, with a dominant 4-1 victory.
While one loss doesn't seem like a serious problem for a team of Bayern's calibre, the manner in which it occurred was shocking. Thoroughly outplayed by Wolfsburg, Bayern went down without a whimper.
Wolfsburg punished Bayern on the break and Bayern were barely able to settle for a scrappy consolation. Indeed, this loss highlights Bayern's frailties on the break and in defencee; a welcome sight for fellow European giants Chelsea, Real Madrid, and Barcelona.
Without key players, Bayern are beginning to falter. Guardiola's men can survive the Bundesliga onslaught easily but the real question is how will they cope when facing their European rivals in the Champions League?
Bayern need to bounce back as soon as possible if they hope to prove to their European counterparts that they will settle for nothing less than Champions League glory.
Tottenham, Real Sociedad, and Wolfsburg have finally revealed the weaknesses of Europe's finest, but Bayern's most recent loss highlights that their weakness is being displayed at the wrong time of the season.
Had it happened at the beginning of the season, amends could have been made properly, but with Champions League looming, Bayern have little time before moving on to a more pressing challenge: European glory.