Bayern Munich broke another record on Wednesday night.
Defeating CSKA Moscow 3-1 away from home, they became 10 games unbeaten, one better than FC Barcelona's previous record.
The best undefeated run in the Champions League - they are as near to perfect as a team can be.
However a position that could be questioned is at centre back - in reference to its lack of depth and possibly quality.
Bayern Munich are the current dominant team throughout Europe and have made fast progress towards retaining the Champions League, but one position that could possibly be improved up on is the centre back position.
Pep Guardiola may seek to strengthen this particular area in January, due to the fact they are so robust in their other positions.
Although some would question the depth in the striker position, Bayern have a number of attacking players with flexibility to help overcome a possible injury to Mario Mandzukic. Guardiola could also resort to his unique 4-3-3 False 9 that he used so frequently with former club FC Barcelona, where Lionel Messi operated to such success.
Arjen Robben, Franck Ribery, Mario Gotze and Thomas Muller are just some of the players that could play the role if he is to revert to a False 9.
However back to the defence where Jerome Boateng plays alongside the Brazilian Dante.
The pair are not weak links by any account, however Boateng can sometimes make costly mistakes and this could be down to a number of factors such as fixture congestion.
Bayern are full of talent but there are negatives even with positives, and their fixture list only increases with the more games they win and Bayern's defensive depth must be on the mind of the Spanish tactician Guardiola.
Bayern do have two other centre backs in the form of Holger Badstuber and Daniel Van Buyten, however Badstuber is currently sidelined for what could be the rest of this season after an injury to his anterior cruciate ligament.
Bayern do have the experienced Van Buyten, however Buyten is not getting any younger and at 35 years old, he is not likely to be part of Munich's long term plans.
They do have one other player, Jan Kirchhoff, the 23-year-old German centre half has appeared once or twice, however due to his lack of experience in Europe it would be nothing but foolish to trust him for games in the Champions League.
However he could be a sensible option for matches in the Bundesliga or the German cups, mainly because of his experience for his previous club 1. FSV Mainz 05.
Bayern could pray that Boateng and Dante remain fit for the rest of the season, rotate the pair with the experienced Van Buyten or invest in a new centre back. The last option would be a coherent move, as one injury to a defender and they could be in a muddle.
Yes, Bayern probably do have sufficient depth for the domestic competitions, but should they risk not investing in a proven centre back for the Champions League?
Bayern are the favourites for the competition, but one slip up could be costly. Investing in a reliable, skilled and experienced centre back seems only logical as Munich look to tyrannise Europe once more.
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