Arsenal lost its first Champions League tie of the season at home to Schalke and surrendered first place in Group H in the process.
Fans and critics alike were waiting to see if Arsenal would bounce back from the weekend loss to Norwich City, and the Gunners disappointed.
Arsenal is still likely to get to the knockout stages of the Champions League, and may even end up on top of the group.
This loss, the Gunners' third in their last five games, provides even more question marks as to the prospects for success for this Arsenal side.
Here are a few talking points from the Champions League tie between Arsenal and Schalke.