#1 Part of the process
Anyone who has been following Chelsea closely this season would have seen this coming. It was visible that The Blues' performance levels had dropped for a month, and they were not playing as well as required. In truth, Chelsea's start to the season as they adapted to the new system was a surprise, and the team only got a reality check today.
There were always problems in this Chelsea team, this match only made it visible for everyone to see. Ultimately it's part of the process, and something like this was always going to happen. It will not be a surprise if a few more of such results follow.
However, it is important for the fans and club to maintain some perspective. It is only the club's first defeat, and they have still done better than expected so far this season. This was only Chelsea's first defeat of the season, and they remain on the right path. Maurizio Sarri must take this defeat as a wake-up call, and learn from the errors.