Arsenal looked to be in control against Swansea on Saturday, that was until Granit Xhaka experienced a rush of blood to the head.
The Gunners had established a 3-2 lead and looked a safe bet to hold on to it before the Swiss midfielder was given his marching orders with 20 minutes remaining.
The reckless lunge on Moudou Barrow was Xhaka's first red for Arsenal, but his eighth for club and country since 2013-14 season.
Gunners fans were quick to defend their new signing, though he almost put the side under more pressure than they could take, claiming the incident deserved nothing more than a yellow card.