Arsenal supporters would have been expecting to see changes to their team's lineup to face Cologne in the Champions League , but they were shocked by one change in particular.
The Gunners have already secured qualification for the last-32 of the tournament in the New Year, and their trip to Germany was always going to feature some fringe players.
But the sight of forgotten man Calum Chambers' inclusion in the side did shock many, and then they were even more shocked when they saw were Arsenal's pre-match Twitter graphic had placed him in the team.
Chambers - who signed a new contract last month but before Thursday night had only played 45 minutes of football this season - was seen at right wing-back, a position usually filled by the quicksilver Hector Bellerin.
Mathieu Debuchy was named as the right sided centre-back, and Gooners were left perplexed.
Will he surprise there though?