AJ Styles suffered what seems to be a separated shoulder during the Royal Rumble match after he landed badly when he took a spear from Edge.
Styles sold the move by flipping in the air but landed badly on his left shoulder. The former champion immediately clutched the shoulder and alerted the referees at ringside. A ringside medic went over to check on him as Styles remained in the corner.
At one point, King Corbin went to work on Styles and you could see Styles telling him about the injury and Corbin took care of him by punching him and letting him sit in the corner. Styles then walked towards Edge and told him about the injury and to eliminate him from the match, calling an audible as he was supposed to last longer than that. Edge then simply threw him over the top rope with Styles lasting 7 minutes and 49 seconds in total.
Recovery for a separated shoulder could run up to twelve weeks depending on the severity of the injury.